Home » Public Forums » GMCnet » [GMCnet] Still at It
| [GMCnet] Still at It [message #221574] |
Sat, 07 September 2013 22:44  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Well, the module may have helped a little, but not much. We made
ishoulder.75 miles with no trouble. Then, just about a mile below Cerro
Summit (<8000'), it began to die again. We disconnected the toad and the
GMC seemed will against -- for <1/2 mile. Then it just quit on a 5% up
grade with no shoulder. I had HER go back down the 4-lane 200 yards, below
the nearest pull-off, and block the lane with the CRV & flashers.
Fortunately, there was little traffic and most of it was 30 mph trucks. I
backed own into that pull-off with no power brakes -- turns out my manually
controlled boost pump has failed too. No too bad at 2-3 mph, but I still
used the pneumatic pedal puller a couple of times for relief.
With no other bright ideas, I replaced the high pressure filter with my
spare. By that time "whatever" had cooled down, so I was ready to proceed
when the highway patrolman stopped to "help".
10 miles or so farther along, on a similar, probably higher grade for which
I don't know a name, traffic was stopped by a flagman. After 30-40
vehicles came down through the wide construction zone, the 30-40 of us
who'd gathered in 20 minutes or so were waved through. About number 3 in
the procession, the GMC went about 100' before it decided it didn't like
the game. I waved the queue around us into the adjacent restricted lane
and the road crew directed them back into the traffic lane a little farther
up the grade. The traffic supervisor arrived almost immediately "...don't
worry about it, it happens all the time. I'll take a look at it in a
minute.". He got busy on the radio. When he returned to me, I explained
that only patience would help. After 15 minutes or so, it decided to run
again, so I ran 30 mph in the 25 mph zone to try to catch my
long-diappeared convoy. Just as they reappeared, it quit again. That time
only a 5 minute rest was required and I proceeded to were the traffic
supervisor was stopped near the end of the zone. "Is it running
again?"..."OK, follow me." He apparently delayed the release of the
downhill bunch to take me clear.
The road crew took it all in stride: "No problem, happens every day.".
'''That's a beauty, what year is it?" "Got any kids along that we need to
get water for or anything?" NO "Get that d...ed ol'' piece of junk out of
the way...". :-)
Within a mile or two we were parked beside a stream having lunch. Even
that was not entirely uneventful: I don't think I mentioned yesterday that
the generator has now become cantankerous -- it doesn't seem to like to run
the A/C for more than 5-10 minutes at a time. I've only checked the full
crankcase so far. Need to look at its gas filter too.
Even before the construction zone, I'd decided to lay over in Gunnison and
hit Monarch Pass early in the morning with a full tank of cool fuel, so
here we are at the "Tall Texan RV Park". Don't know where the name came
from because the owner is a short Polak. I know because the host called
him out after I reported a problem with the power -- the A/C wouldn't run.
Turned out, MY power cord chose now to short (through melted insulation)
and destroy the plug. :-(
That's still not the end of the tale: Gunnison shuts down Saturday
afternoon and Sunday. Only the little Walmart was open. The host called
and the reported that the did have the 30A plug n stock. Naturally, they
had adapters only, no plugs nor sockets. But as I stood there discovering
that fact, the campground host called my cell phone to say he'd found anew
spare in his trailer -- left over from an earlier rig.
We now have shore power again. And baked a nice pizza for supper.
But, no, that's not all: At some point the host noticed a low tire on the
Honda. He pumped it up with shop air, but I just checked and it's low
again. Since there will be no repair shop open tomorrow and I don't want
to mount the spare, the first early morning we can tackle Monarch is
Tuesday. Thank goodness it's a pleasant area and a nice park ("only" $36
per night w/o cable).
The one suspect item I can think of now is the distributor condenser. That
is, to the best of my knowledge, NLA. But I do have a spare distributor
with me from which I can take it. At this point it's worth a try.
Still waiting for the Silver Bullet!
Ken H.
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Still at It [message #221582 is a reply to message #221574] |
Sun, 08 September 2013 01:00  |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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Substituting your spare distributor would be a good choice it would. Eliminate most of your electrical possibility problems ( the pickup coil could be defective) a direct 12 connection to the distributor couldn't hurt either. I once had an intermittent connection in the plug that goes thru the firewall.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] Still at It [message #221596 is a reply to message #221574] |
Sun, 08 September 2013 08:02 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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Hey Ken,
Make the best of it and head over to the Trough restaurant for the best
hunk of prime rib in the west. Most likely the best service too. A real
treat.
Steve F.
On Sat, Sep 7, 2013 at 8:44 PM, Ken Henderson <hend4800@bellsouth.net>wrote:
> Well, the module may have helped a little, but not much. We made
> ishoulder.75 miles with no trouble. Then, just about a mile below Cerro
> Summit (<8000'), it began to die again. We disconnected the toad and the
> GMC seemed will against -- for <1/2 mile. Then it just quit on a 5% up
> grade with no shoulder. I had HER go back down the 4-lane 200 yards, below
> the nearest pull-off, and block the lane with the CRV & flashers.
> Fortunately, there was little traffic and most of it was 30 mph trucks. I
> backed own into that pull-off with no power brakes -- turns out my manually
> controlled boost pump has failed too. No too bad at 2-3 mph, but I still
> used the pneumatic pedal puller a couple of times for relief.
>
> With no other bright ideas, I replaced the high pressure filter with my
> spare. By that time "whatever" had cooled down, so I was ready to proceed
> when the highway patrolman stopped to "help".
>
> 10 miles or so farther along, on a similar, probably higher grade for which
> I don't know a name, traffic was stopped by a flagman. After 30-40
> vehicles came down through the wide construction zone, the 30-40 of us
> who'd gathered in 20 minutes or so were waved through. About number 3 in
> the procession, the GMC went about 100' before it decided it didn't like
> the game. I waved the queue around us into the adjacent restricted lane
> and the road crew directed them back into the traffic lane a little farther
> up the grade. The traffic supervisor arrived almost immediately "...don't
> worry about it, it happens all the time. I'll take a look at it in a
> minute.". He got busy on the radio. When he returned to me, I explained
> that only patience would help. After 15 minutes or so, it decided to run
> again, so I ran 30 mph in the 25 mph zone to try to catch my
> long-diappeared convoy. Just as they reappeared, it quit again. That time
> only a 5 minute rest was required and I proceeded to were the traffic
> supervisor was stopped near the end of the zone. "Is it running
> again?"..."OK, follow me." He apparently delayed the release of the
> downhill bunch to take me clear.
>
> The road crew took it all in stride: "No problem, happens every day.".
> '''That's a beauty, what year is it?" "Got any kids along that we need to
> get water for or anything?" NO "Get that d...ed ol'' piece of junk out of
> the way...". :-)
>
> Within a mile or two we were parked beside a stream having lunch. Even
> that was not entirely uneventful: I don't think I mentioned yesterday that
> the generator has now become cantankerous -- it doesn't seem to like to run
> the A/C for more than 5-10 minutes at a time. I've only checked the full
> crankcase so far. Need to look at its gas filter too.
>
> Even before the construction zone, I'd decided to lay over in Gunnison and
> hit Monarch Pass early in the morning with a full tank of cool fuel, so
> here we are at the "Tall Texan RV Park". Don't know where the name came
> from because the owner is a short Polak. I know because the host called
> him out after I reported a problem with the power -- the A/C wouldn't run.
> Turned out, MY power cord chose now to short (through melted insulation)
> and destroy the plug. :-(
>
> That's still not the end of the tale: Gunnison shuts down Saturday
> afternoon and Sunday. Only the little Walmart was open. The host called
> and the reported that the did have the 30A plug n stock. Naturally, they
> had adapters only, no plugs nor sockets. But as I stood there discovering
> that fact, the campground host called my cell phone to say he'd found anew
> spare in his trailer -- left over from an earlier rig.
>
> We now have shore power again. And baked a nice pizza for supper.
>
> But, no, that's not all: At some point the host noticed a low tire on the
> Honda. He pumped it up with shop air, but I just checked and it's low
> again. Since there will be no repair shop open tomorrow and I don't want
> to mount the spare, the first early morning we can tackle Monarch is
> Tuesday. Thank goodness it's a pleasant area and a nice park ("only" $36
> per night w/o cable).
>
> The one suspect item I can think of now is the distributor condenser. That
> is, to the best of my knowledge, NLA. But I do have a spare distributor
> with me from which I can take it. At this point it's worth a try.
>
> Still waiting for the Silver Bullet!
>
> Ken H.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Take care,
Steve
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| Re: [GMCnet] Still at It [message #221618 is a reply to message #221574] |
Sun, 08 September 2013 10:18 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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The interesting thing - genset problem AND engine problem. The only commonality is the fuel system. Unless it's pure coincidence, I'd look to the fuel system... but admittedly I dunno where in it.
--johnny
--------------------------------------------
On Sun, 9/8/13, Ken Henderson <hend4800@bellsouth.net> wrote:
Subject: [GMCnet] Still at It
To: "gmclist" <gmclist@temp.gmcnet.org>
Date: Sunday, September 8, 2013, 3:44 AM
Well, the module may have helped a
little, but not much. We made
ishoulder.75 miles with no trouble. Then, just about a
mile below Cerro
Summit (<8000'), it began to die again. We
disconnected the toad and the
GMC seemed will against -- for <1/2 mile. Then it
just quit on a 5% up
grade with no shoulder. I had HER go back down the
4-lane 200 yards, below
the nearest pull-off, and block the lane with the CRV &
flashers.
Fortunately, there was little traffic and most of it was 30
mph trucks. I
backed own into that pull-off with no power brakes -- turns
out my manually
controlled boost pump has failed too. No too bad at
2-3 mph, but I still
used the pneumatic pedal puller a couple of times for
relief.
With no other bright ideas, I replaced the high pressure
filter with my
spare. By that time "whatever" had cooled down, so I
was ready to proceed
when the highway patrolman stopped to "help".
10 miles or so farther along, on a similar, probably higher
grade for which
I don't know a name, traffic was stopped by a flagman.
After 30-40
vehicles came down through the wide construction zone, the
30-40 of us
who'd gathered in 20 minutes or so were waved through.
About number 3 in
the procession, the GMC went about 100' before it decided it
didn't like
the game. I waved the queue around us into the
adjacent restricted lane
and the road crew directed them back into the traffic lane a
little farther
up the grade. The traffic supervisor arrived almost
immediately "...don't
worry about it, it happens all the time. I'll take a
look at it in a
minute.". He got busy on the radio. When he returned
to me, I explained
that only patience would help. After 15 minutes or so,
it decided to run
again, so I ran 30 mph in the 25 mph zone to try to catch
my
long-diappeared convoy. Just as they reappeared, it
quit again. That time
only a 5 minute rest was required and I proceeded to
were the traffic
supervisor was stopped near the end of the zone. "Is
it running
again?"..."OK, follow me." He apparently
delayed the release of the
downhill bunch to take me clear.
The road crew took it all in stride: "No problem,
happens every day.".
'''That's a beauty, what year is it?" "Got
any kids along that we need to
get water for or anything?" NO "Get that d...ed ol''
piece of junk out of
the way...". :-)
Within a mile or two we were parked beside a stream having
lunch. Even
that was not entirely uneventful: I don't think I
mentioned yesterday that
the generator has now become cantankerous -- it doesn't seem
to like to run
the A/C for more than 5-10 minutes at a time. I've
only checked the full
crankcase so far. Need to look at its gas filter too.
Even before the construction zone, I'd decided to lay over
in Gunnison and
hit Monarch Pass early in the morning with a full tank of
cool fuel, so
here we are at the "Tall Texan RV Park". Don't know
where the name came
from because the owner is a short Polak. I know
because the host called
him out after I reported a problem with the power -- the A/C
wouldn't run.
Turned out, MY power cord chose now to short (through melted
insulation)
and destroy the plug. :-(
That's still not the end of the tale: Gunnison shuts
down Saturday
afternoon and Sunday. Only the little Walmart was
open. The host called
and the reported that the did have the 30A plug n
stock. Naturally, they
had adapters only, no plugs nor sockets. But as I
stood there discovering
that fact, the campground host called my cell phone to say
he'd found anew
spare in his trailer -- left over from an earlier rig.
We now have shore power again. And baked a nice pizza
for supper.
But, no, that's not all: At some point the host
noticed a low tire on the
Honda. He pumped it up with shop air, but I just
checked and it's low
again. Since there will be no repair shop open
tomorrow and I don't want
to mount the spare, the first early morning we can tackle
Monarch is
Tuesday. Thank goodness it's a pleasant area and a
nice park ("only" $36
per night w/o cable).
The one suspect item I can think of now is the distributor
condenser. That
is, to the best of my knowledge, NLA. But I do have a
spare distributor
with me from which I can take it. At this point it's
worth a try.
Still waiting for the Silver Bullet!
Ken H.
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Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Still at It [message #221628 is a reply to message #221618] |
Sun, 08 September 2013 11:50 |
jim kanomata
Messages: 257
Registered: March 2007
Location: fremont,ca
Karma: 12
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Senior Member |
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Ken,
I hope I do not have any problems heading to the convention from here.
I had both the module and coil go out here at the shop.
Our tech felt that there might be a short in the distributor so we ched it out. Yup, it was the capacitor shorting that was causing the problem.
I was planning on leaving here Tuesday, but it looks like it will be Thursday.
I still want to swing up to Idaho to visit my Aunt, so I better not have any problems along the way.
I will see both of you in Branson.
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Still at It [message #221646 is a reply to message #221574] |
Sun, 08 September 2013 14:30 |
Sandra Price
Messages: 709
Registered: May 2006
Karma: 1
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Senior Member |
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Love your trip report, Ken. Sounds like a "hairy" trip, but later you'll
have fun rehashing every experience. Thanks for sharing. Keep a stiff
upper lip Elaine.
Sandra and Bob
On Sep 7, 2013 10:44 PM, "Ken Henderson" <hend4800@bellsouth.net> wrote:
> Well, the module may have helped a little, but not much. We made
> ishoulder.75 miles with no trouble. Then, just about a mile below Cerro
> Summit (<8000'), it began to die again. We disconnected the toad and the
> GMC seemed will against -- for <1/2 mile. Then it just quit on a 5% up
> grade with no shoulder. I had HER go back down the 4-lane 200 yards, below
> the nearest pull-off, and block the lane with the CRV & flashers.
> Fortunately, there was little traffic and most of it was 30 mph trucks. I
> backed own into that pull-off with no power brakes -- turns out my manually
> controlled boost pump has failed too. No too bad at 2-3 mph, but I still
> used the pneumatic pedal puller a couple of times for relief.
>
> With no other bright ideas, I replaced the high pressure filter with my
> spare. By that time "whatever" had cooled down, so I was ready to proceed
> when the highway patrolman stopped to "help".
>
> 10 miles or so farther along, on a similar, probably higher grade for which
> I don't know a name, traffic was stopped by a flagman. After 30-40
> vehicles came down through the wide construction zone, the 30-40 of us
> who'd gathered in 20 minutes or so were waved through. About number 3 in
> the procession, the GMC went about 100' before it decided it didn't like
> the game. I waved the queue around us into the adjacent restricted lane
> and the road crew directed them back into the traffic lane a little farther
> up the grade. The traffic supervisor arrived almost immediately "...don't
> worry about it, it happens all the time. I'll take a look at it in a
> minute.". He got busy on the radio. When he returned to me, I explained
> that only patience would help. After 15 minutes or so, it decided to run
> again, so I ran 30 mph in the 25 mph zone to try to catch my
> long-diappeared convoy. Just as they reappeared, it quit again. That time
> only a 5 minute rest was required and I proceeded to were the traffic
> supervisor was stopped near the end of the zone. "Is it running
> again?"..."OK, follow me." He apparently delayed the release of the
> downhill bunch to take me clear.
>
> The road crew took it all in stride: "No problem, happens every day.".
> '''That's a beauty, what year is it?" "Got any kids along that we need to
> get water for or anything?" NO "Get that d...ed ol'' piece of junk out of
> the way...". :-)
>
> Within a mile or two we were parked beside a stream having lunch. Even
> that was not entirely uneventful: I don't think I mentioned yesterday that
> the generator has now become cantankerous -- it doesn't seem to like to run
> the A/C for more than 5-10 minutes at a time. I've only checked the full
> crankcase so far. Need to look at its gas filter too.
>
> Even before the construction zone, I'd decided to lay over in Gunnison and
> hit Monarch Pass early in the morning with a full tank of cool fuel, so
> here we are at the "Tall Texan RV Park". Don't know where the name came
> from because the owner is a short Polak. I know because the host called
> him out after I reported a problem with the power -- the A/C wouldn't run.
> Turned out, MY power cord chose now to short (through melted insulation)
> and destroy the plug. :-(
>
> That's still not the end of the tale: Gunnison shuts down Saturday
> afternoon and Sunday. Only the little Walmart was open. The host called
> and the reported that the did have the 30A plug n stock. Naturally, they
> had adapters only, no plugs nor sockets. But as I stood there discovering
> that fact, the campground host called my cell phone to say he'd found anew
> spare in his trailer -- left over from an earlier rig.
>
> We now have shore power again. And baked a nice pizza for supper.
>
> But, no, that's not all: At some point the host noticed a low tire on the
> Honda. He pumped it up with shop air, but I just checked and it's low
> again. Since there will be no repair shop open tomorrow and I don't want
> to mount the spare, the first early morning we can tackle Monarch is
> Tuesday. Thank goodness it's a pleasant area and a nice park ("only" $36
> per night w/o cable).
>
> The one suspect item I can think of now is the distributor condenser. That
> is, to the best of my knowledge, NLA. But I do have a spare distributor
> with me from which I can take it. At this point it's worth a try.
>
> Still waiting for the Silver Bullet!
>
> Ken H.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Still at It [message #221688 is a reply to message #221574] |
Sun, 08 September 2013 18:05 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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Ken, You've probably done this but just in case, next time this happens, reach out the drivers window and crack the gas cap. If the vent is plugged, that should let it flow. I'm still hung up on pressure vs flow.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] Still at It [message #221697 is a reply to message #221574] |
Sun, 08 September 2013 19:45 |
bobby5832708
Messages: 237
Registered: November 2006
Location: Winter Springs FL
Karma: 3
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Senior Member |
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Ken,
Have you ever replaced the ignition switch?
Story:
Years ago my ex-wife had a 1979 TransAm that would stop running after a half hour or so. Sometimes it would then just crank and not fire but usually no cranking at all. Letting it sit for a minute and trying again and it would start and run fine for another 15 minutes or so. Since I had seen this on other cars when I was wrenching for a living in the late '70s I replaced the ignition switch and disassembled the old one to find fried contacts. The car ran fine afterwards.
Just a thought.
Bob Heller
2017 Winnebago 29VE
Winter Springs FL
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| Re: [GMCnet] Still at It [message #221731 is a reply to message #221697] |
Sun, 08 September 2013 23:10 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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What an idea! No, I haven't, and I'm pessimistic because I've repeatedly
tested and found spark & spray immediately after shutdown, while not
starting. And all instrument indications are normal throughout the
episodes. But at this point, if the distributor replacement doesn't help,
I'll jump the switch.
Thanks for the possibility I hadn't considered.
Ken H
On Sep 8, 2013 6:45 PM, "Bob Heller" <rheller@cfl.rr.com> wrote:
>
>
> Ken,
>
> Have you ever replaced the ignition switch?
>
> Story:
> Years ago my ex-wife had a 1979 TransAm that would stop running after a
> half hour or so. Sometimes it would then just crank and not fire but
> usually no cranking at all. Letting it sit for a minute and trying again
> and it would start and run fine for another 15 minutes or so. Since I had
> seen this on other cars when I was wrenching for a living in the late '70s
> I replaced the ignition switch and disassembled the old one to find fried
> contacts. The car ran fine afterwards.
>
> Just a thought.
> --
> Bob Heller
> 1974 X-Canyonlands 26ft
> Winter Springs FL
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Still at It [message #221732 is a reply to message #221720] |
Sun, 08 September 2013 23:15 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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VERY unlikely. I haven't been to a station that advertises E85 and I've
done all the pumping except in Oregon. More significantly, the problem has
occurred on multiple tanks of fuel, frequently after running fine for 100+
miles after filled.
Ken H.
On Sep 8, 2013 9:02 PM, "John Biwersi" <jbiwersi@mac.com> wrote:
>
>
> Ken, Have you thought about the possibility that you got E85 the last
> time you got fuel? This might explain why both engines are running poorly.
> If you have room in your tanks, you might want to search for real gas to
> dilute the crap. Hope your luck improves.
> _______________________________________________
> GMCnet mailing list
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Still at It [message #221760 is a reply to message #221732] |
Mon, 09 September 2013 10:53 |
Dave Mumert
Messages: 272
Registered: February 2004
Location: Olds, AB, Canada
Karma: 0
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Senior Member |
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Hi Ken
If it is not fuel and not spark then it must be something to do with the EFI. Have you been monitoring or logging from the EBL
system?
Could you have a bad connection on your TPS? IF the EFI thinks the throttle is closed it would probably cut off the fuel.
Just thinking.
Good luck
Dave Mumert
> -----Original Message-----
> From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Ken Henderson
> Sent: Sunday, September 08, 2013 10:15 PM
> To: gmclist
> Subject: Re: [GMCnet] Still at It
>
> VERY unlikely. I haven't been to a station that advertises E85 and I've done all the pumping except in Oregon. More
significantly, the
> problem has occurred on multiple tanks of fuel, frequently after running fine for 100+ miles after filled.
>
> Ken H.
> On Sep 8, 2013 9:02 PM, "John Biwersi" <jbiwersi@mac.com> wrote:
>
> >
> >
> > Ken, Have you thought about the possibility that you got E85 the last
> > time you got fuel? This might explain why both engines are running poorly.
> > If you have room in your tanks, you might want to search for real gas
> > to dilute the crap. Hope your luck improves.
> > _______________________________________________
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| Re: [GMCnet] Still at It [message #221783 is a reply to message #221731] |
Mon, 09 September 2013 14:45 |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
|
Senior Member |
|
|
| Ken Henderson wrote on Sun, 08 September 2013 23:10 |
What an idea! No, I haven't, and I'm pessimistic because I've repeatedly
tested and found spark & spray immediately after shutdown, while not
starting. And all instrument indications are normal throughout the
episodes. But at this point, if the distributor replacement doesn't help,
I'll jump the switch.
Thanks for the possibility I hadn't considered.
Ken H
On Sep 8, 2013 6:45 PM, "Bob Heller" <rheller@cfl.rr.com> wrote:
>
>
> Ken,
>
> Have you ever replaced the ignition switch?
>
> Story:
> Years ago my ex-wife had a 1979 TransAm that would stop running after a
> half hour or so. Sometimes it would then just crank and not fire but
> usually no cranking at all. Letting it sit for a minute and trying again
> and it would start and run fine for another 15 minutes or so. Since I had
> seen this on other cars when I was wrenching for a living in the late '70s
> I replaced the ignition switch and disassembled the old one to find fried
> contacts. The car ran fine afterwards.
>
> Just a thought.
> --
> Bob Heller
> 1974 X-Canyonlands 26ft
> Winter Springs FL
> _______________________________________________
> GMCnet mailing list
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>
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FWIW, a friend had a Ford Pinto with a similar problem. While it appeared to have spark, it didn't really. That car would run for a while and after it would heat up, would start missing and eventually just quit. After sitting for a while, would restart and run fine for a while. Look at the color of the spark. If it is yellow, you have a bad coil. The spark should be pure blue. As soon as I saw the yellow spark, i replace the coil and the problem went away. HTH
Larry 
78 Royale w/500 Caddy
Menomonie, WI.
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| Re: [GMCnet] Still at It [message #221849 is a reply to message #221760] |
Mon, 09 September 2013 22:13 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Another episode:
Up at 0630, the Honda's flat was fixed by 0820. We hit the bottom of the
steep grade to Monarch Pass at about 1000, with the temperature around
70*F. We disconnected the toad and I attempted the dreaded climb to
11,312' MSL.
With the spare distributor installed (and advanced a bit by vacuum 'cause
it wound up too retarded), I had high hopes of being able to creep to the
top without stopping. And so I did -- in 2nd gear, at 40-50 mph, with part
throttle, speed limited by the curves, not the grade! SHE reported at the
top, "I got tears in my eyes I was so proud..."
I was prepared to give Gordon a great big atta-boy for convincing me to
swap out the distributor. Until about 1300, when, as we cruised across the
4300' MSL high plains, the old "Run a while then rest a while" game started
all over again. :-((
Apparently the Monarch success was all due to the cool temperature, not
anything I did. My last, futile, effort today was to remove the top of the
grille-to-radiator duct I installed some months ago. I was hoping that by
allowing air spillage over the top of the radiator (like OEM), the heat
would be better scavenged from the top of the engine compartment. No
noticeable change at all.
No, the tank vents are NOT plugged. No, unfortunately I am not logging
EBL, nor even monitoring it: My WUD computer died over a month ago, taking
with it my only RS-232 port. I haven't been able to get a 232-USB adapter
for the remaining functional laptop. DON'T I WISH!!! The more symptoms I
see, the more confused I get: Level road, 65 mph, 10-12"Hg (4300' MSL),
AFR 14.7 -- suddenly, the engine rpm bleeds off. With constant throttle,,
vacuum rises; on CC, it drops because the CC opens the throttle trying to
maintain rpm. Sometimes slowing will let the engine catch back up briefly,
or even resume normal operation for a mile or two. Eventually, engine dies
completely. But it may require only a 3 to 5 minute rest before starting
and running fine for another 15-30 minutes; then it wants another rest.
There's never any correlation with bumps or road surface that might
indicate a loose connection. I've reseated most of those too.
One suspect part I have not replaced is the coil. I did disassemble the
one that's installed to examine and refresh all its contacts. Tomorrow
I'll replace it. What more can I do???
Ken Frustrated H.
On Sep 9, 2013 9:53 AM, "Dave Mumert" <dave@mumert.com> wrote:
> Hi Ken
>
> If it is not fuel and not spark then it must be something to do with the
> EFI. Have you been monitoring or logging from the EBL
> system?
>
> Could you have a bad connection on your TPS? IF the EFI thinks the
> throttle is closed it would probably cut off the fuel.
>
> Just thinking.
>
> Good luck
>
> Dave Mumert
>
>
> > -----Original Message-----
> > From: gmclist-bounces@temp.gmcnet.org [mailto:
> gmclist-bounces@temp.gmcnet.org] On Behalf Of Ken Henderson
> > Sent: Sunday, September 08, 2013 10:15 PM
> > To: gmclist
> > Subject: Re: [GMCnet] Still at It
> >
> > VERY unlikely. I haven't been to a station that advertises E85 and I've
> done all the pumping except in Oregon. More
> significantly, the
> > problem has occurred on multiple tanks of fuel, frequently after running
> fine for 100+ miles after filled.
> >
> > Ken H.
> > On Sep 8, 2013 9:02 PM, "John Biwersi" <jbiwersi@mac.com> wrote:
> >
> > >
> > >
> > > Ken, Have you thought about the possibility that you got E85 the last
> > > time you got fuel? This might explain why both engines are running
> poorly.
> > > If you have room in your tanks, you might want to search for real gas
> > > to dilute the crap. Hope your luck improves.
> > > _______________________________________________
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
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Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Still at It [message #221857 is a reply to message #221849] |
Tue, 10 September 2013 00:25 |
Guy Lopes
Messages: 499
Registered: April 2004
Location: Sacramento, CA
Karma: 3
|
Senior Member |
|
|
Ken,
A universal serial to USB adapter is available at Radio Shack online and may
be available at a store near you. Will one of these work, or is the required
cable proprietary?
Guy Lopes
76 Birchaven "Orion"
Sacramento, CA
www.GMC-Guy.com
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Ken Henderson
Sent: Monday, September 09, 2013 8:14 PM
To: gmclist
Subject: Re: [GMCnet] Still at It
Another episode:
Up at 0630, the Honda's flat was fixed by 0820. We hit the bottom of the
steep grade to Monarch Pass at about 1000, with the temperature around 70*F.
We disconnected the toad and I attempted the dreaded climb to 11,312' MSL.
With the spare distributor installed (and advanced a bit by vacuum 'cause it
wound up too retarded), I had high hopes of being able to creep to the top
without stopping. And so I did -- in 2nd gear, at 40-50 mph, with part
throttle, speed limited by the curves, not the grade! SHE reported at the
top, "I got tears in my eyes I was so proud..."
I was prepared to give Gordon a great big atta-boy for convincing me to swap
out the distributor. Until about 1300, when, as we cruised across the 4300'
MSL high plains, the old "Run a while then rest a while" game started all
over again. :-((
Apparently the Monarch success was all due to the cool temperature, not
anything I did. My last, futile, effort today was to remove the top of the
grille-to-radiator duct I installed some months ago. I was hoping that by
allowing air spillage over the top of the radiator (like OEM), the heat
would be better scavenged from the top of the engine compartment. No
noticeable change at all.
No, the tank vents are NOT plugged. No, unfortunately I am not logging
EBL, nor even monitoring it: My WUD computer died over a month ago, taking
with it my only RS-232 port. I haven't been able to get a 232-USB adapter
for the remaining functional laptop. DON'T I WISH!!! The more symptoms I
see, the more confused I get: Level road, 65 mph, 10-12"Hg (4300' MSL),
AFR 14.7 -- suddenly, the engine rpm bleeds off. With constant throttle,,
vacuum rises; on CC, it drops because the CC opens the throttle trying to
maintain rpm. Sometimes slowing will let the engine catch back up briefly,
or even resume normal operation for a mile or two. Eventually, engine dies
completely. But it may require only a 3 to 5 minute rest before starting
and running fine for another 15-30 minutes; then it wants another rest.
There's never any correlation with bumps or road surface that might indicate
a loose connection. I've reseated most of those too.
One suspect part I have not replaced is the coil. I did disassemble the one
that's installed to examine and refresh all its contacts. Tomorrow I'll
replace it. What more can I do???
Ken Frustrated H.
On Sep 9, 2013 9:53 AM, "Dave Mumert" <dave@mumert.com> wrote:
> Hi Ken
>
> If it is not fuel and not spark then it must be something to do with
> the EFI. Have you been monitoring or logging from the EBL system?
>
> Could you have a bad connection on your TPS? IF the EFI thinks the
> throttle is closed it would probably cut off the fuel.
>
> Just thinking.
>
> Good luck
>
> Dave Mumert
>
>
> > -----Original Message-----
> > From: gmclist-bounces@temp.gmcnet.org [mailto:
> gmclist-bounces@temp.gmcnet.org] On Behalf Of Ken Henderson
> > Sent: Sunday, September 08, 2013 10:15 PM
> > To: gmclist
> > Subject: Re: [GMCnet] Still at It
> >
> > VERY unlikely. I haven't been to a station that advertises E85 and
> > I've
> done all the pumping except in Oregon. More significantly, the
> > problem has occurred on multiple tanks of fuel, frequently after
> > running
> fine for 100+ miles after filled.
> >
> > Ken H.
> > On Sep 8, 2013 9:02 PM, "John Biwersi" <jbiwersi@mac.com> wrote:
> >
> > >
> > >
> > > Ken, Have you thought about the possibility that you got E85 the
> > > last time you got fuel? This might explain why both engines are
> > > running
> poorly.
> > > If you have room in your tanks, you might want to search for real
> > > gas to dilute the crap. Hope your luck improves.
> > > _______________________________________________
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
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Guy Lopes
76 Birchaven "Orion"
Sacramento, CA
W6TOL
www.GMC-Guy.com
|
|
|
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| Re: [GMCnet] Still at It [message #221865 is a reply to message #221574] |
Tue, 10 September 2013 06:18 |
 |
SeanKidd
Messages: 747
Registered: June 2012
Location: Northern Neck Virginia
Karma: 4
|
Senior Member |
|
|
Ken, I'm sorry to hear you you are still having problems, When you mentioned you replaced your dizzy, I was assuming you had coil in cap HEI...if your coil is still being fed from your nichrome wire, check the voltage at the coil,you could still get a spark, but not a hot one, resistance increases with temperature. Furthermore, a hot coil will internally ground when the insulation breaks down: shoot it with your non contact thermometer....shouldn't be much hotter than the rest of the engine compartment. I think you're on the right track by replacing the coil, if anything to rule it out...
Sean and Stephanie
73 Ex-CanyonLands 26' #317 "Oliver"
Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
Colonial Travelers
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| Re: [GMCnet] Still at It [message #221871 is a reply to message #221849] |
Tue, 10 September 2013 06:43 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
If the coil's all that's left, why not? Fsiling that, is there >any< chance the check valve on the non-running pump leaks when it gets warm?
There is another option open to you. Get a kid goat less than a year old. Build a small altar in front of the coach with the engine flaps open. At the stroke of midnight,take naked and sacrifice the goat in the approved Wiccan manner. Dance three times around the coach smearing goat blood along its flanks. The coach should be facing Stonhenge (East) for best effect.
I've forgotten which direction you're supposed to dance. If, instead of fixing the engine problem it rains for three days in your shower, repeat the sacrifice but go in the opposite direction from last time.
--johnny
--------------------------------------------
Another episode:
One suspect part I have not replaced is the coil. I
did disassemble the
one that's installed to examine and refresh all its
contacts. Tomorrow
I'll replace it. What more can I do???
Ken Frustrated H.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Still at It [message #221873 is a reply to message #221574] |
Tue, 10 September 2013 06:55 |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
Karma: 0
|
Senior Member |
|
|
Have you given any thought to the 7747 perhaps being the culprit?
Richard
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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