Home » Public Forums » GMCnet » [GMCnet] Another Trying Day
| [GMCnet] Another Trying Day [message #221419] |
Fri, 06 September 2013 23:43  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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We moved today from Hill AFB to Grand Junction, CO. We were "beside the
road" 5 or 6 times in the last 100 miles. The engine would just slowly
die, usually as I neared the crest of a long grade. A couple of times I
immediately checked fuel injector spray and spark -- both there. After
sitting for 5-10 minutes, it would start and run fine for another 10-30
miles at 60-70 mph, then lay down on the job again. Finally, I
disconnected the toad and SHE drove it the last 50 mies or so. STILL I had
the problem -- it almost died as I pulled into the RV park after 20 level
miles -- though it didn't completely die like it did in the main gate to
Hill AFB. :-)
Because I never lost fuel pressure on my dash gauge, I'm sure it was not
vapor lock. I THINK the ignition control module in the distributor must be
heat sensitive, so I bought and installed a new one this evening.
It's hard to understand "cooling off" during the brief pauses, when "heat
soak" should have been heating things up -- but that's how it worked. I
never stopped for long enough for any real cooling to occur. I'm all ears
for better ideas.
Since Fred told me all I could need to know about Rt.50, except how many
times to sneeze, I've decided that's the route we'll take tomorrow.
Monarch Pass, elev 11,312' should tell whether my diagnosis was correct.
Ken "Shoulder Lover" 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] Another Trying Day [message #221427 is a reply to message #221419] |
Sat, 07 September 2013 01:17  |
jimtze
Messages: 92
Registered: June 2011
Location: Victoria, BC
Karma: 1
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Hello Ken
That sounds too familiar. Driving across New Mexico, we had the same stop and go experience. It turned out to be the fuel filter. I guess sitting let gravity move enough material that we could run for a ways until it clogged again. I'm hoping that having my supply of Fram G3870 will ward off the ethanol spirits.
Jim Bratvold
Victoria, BC
76 Eleganza ll
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| Re: [GMCnet] Another Trying Day [message #221436 is a reply to message #221419] |
Sat, 07 September 2013 05:14 |
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wally
Messages: 643
Registered: August 2004
Location: Omaha Nebraska
Karma: 5
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Senior Member |
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Ken, Could you read afr while this was happening?
| Ken Henderson wrote on Fri, 06 September 2013 23:43 |
We moved today from Hill AFB to Grand Junction, CO. We were "beside the
road" 5 or 6 times in the last 100 miles. The engine would just slowly
die, usually as I neared the crest of a long grade. A couple of times I
immediately checked fuel injector spray and spark -- both there. After
sitting for 5-10 minutes, it would start and run fine for another 10-30
miles at 60-70 mph, then lay down on the job again. Finally, I
disconnected the toad and SHE drove it the last 50 mies or so. STILL I had
the problem -- it almost died as I pulled into the RV park after 20 level
miles -- though it didn't completely die like it did in the main gate to
Hill AFB. 
Because I never lost fuel pressure on my dash gauge, I'm sure it was not
vapor lock. I THINK the ignition control module in the distributor must be
heat sensitive, so I bought and installed a new one this evening.
It's hard to understand "cooling off" during the brief pauses, when "heat
soak" should have been heating things up -- but that's how it worked. I
never stopped for long enough for any real cooling to occur. I'm all ears
for better ideas.
Since Fred told me all I could need to know about Rt.50, except how many
times to sneeze, I've decided that's the route we'll take tomorrow.
Monarch Pass, elev 11,312' should tell whether my diagnosis was correct.
Ken "Shoulder Lover" H.
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Wally Anderson
Omaha NE
75 Glenbrook
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| Re: [GMCnet] Another Trying Day [message #221441 is a reply to message #221419] |
Sat, 07 September 2013 06:21 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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Hate that you are having troubles Ken.
When it looses power, if you shift to neutral, will it rev up? Or is it only under load that you see the problem?
I'm in the fuel problem camp.
I'm not very good on hydraulics but isn't there something about you can still have constant pressure while having restricted flow?
I know you have two electric fuel pumps and am sure you've switched around many times during the day. It would not make a lot of sense for both tanks socks and/or filters to restrict at the same time UNLESS you got some crap gas.
Have you tried something like StarTron additive or octane booster?
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] Another Trying Day [message #221450 is a reply to message #221419] |
Sat, 07 September 2013 07:56 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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I hope you get it sorted out Ken. You're going to love Black Canyon, the
scenery never quits.
Steve
On Fri, Sep 6, 2013 at 9:43 PM, Ken Henderson <hend4800@bellsouth.net>wrote:
> We moved today from Hill AFB to Grand Junction, CO. We were "beside the
> road" 5 or 6 times in the last 100 miles. The engine would just slowly
> die, usually as I neared the crest of a long grade. A couple of times I
> immediately checked fuel injector spray and spark -- both there. After
> sitting for 5-10 minutes, it would start and run fine for another 10-30
> miles at 60-70 mph, then lay down on the job again. Finally, I
> disconnected the toad and SHE drove it the last 50 mies or so. STILL I had
> the problem -- it almost died as I pulled into the RV park after 20 level
> miles -- though it didn't completely die like it did in the main gate to
> Hill AFB. :-)
>
> Because I never lost fuel pressure on my dash gauge, I'm sure it was not
> vapor lock. I THINK the ignition control module in the distributor must be
> heat sensitive, so I bought and installed a new one this evening.
> It's hard to understand "cooling off" during the brief pauses, when "heat
> soak" should have been heating things up -- but that's how it worked. I
> never stopped for long enough for any real cooling to occur. I'm all ears
> for better ideas.
>
> Since Fred told me all I could need to know about Rt.50, except how many
> times to sneeze, I've decided that's the route we'll take tomorrow.
> Monarch Pass, elev 11,312' should tell whether my diagnosis was correct.
>
> Ken "Shoulder Lover" 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] Another Trying Day [message #221452 is a reply to message #221419] |
Sat, 07 September 2013 08:06 |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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| Ken Henderson wrote on Fri, 06 September 2013 21:43 |
We moved today from Hill AFB to Grand Junction, CO.
Since Fred told me all I could need to know about Rt.50, except how many
times to sneeze, I've decided that's the route we'll take tomorrow.
Monarch Pass, elev 11,312' should tell whether my diagnosis was correct.
|
Ken, Ken, Ken... You have had your troubles.
I agree with the module idea. They will break down in heat. At least your fuel pressure is not sagging.
I wish you well. Remember I am the guy who never had vapor lock unti Monarch Pass. Because you had vaporlock like symptoms before in the Rockies, start with a full tank and start early. The last 8 miles or so I suggest shifting down to low and just letting her putter up. Watch your trans temp.
On the other hand maybe you did not have vaporlock coming West in May. Maybe it was module all the time!
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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| Re: [GMCnet] Another Trying Day [message #221459 is a reply to message #221419] |
Sat, 07 September 2013 08:51 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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How can it be fuel with your military spec fuel system? But you would think bad ignition would be popping and missing rather than sag. Could the computer be pulling timing with a false knock signal????Are you at 14V when this happens?
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Another Trying Day [message #221460 is a reply to message #221419] |
Sat, 07 September 2013 09:00 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Well, since all other guesses have been taken -- I will suggest you check for intake air obstruction. As I recall you have the agricultural hose intake -- maybe it is collapsing or has some other blockage.
Dennis
| Ken Henderson wrote on Fri, 06 September 2013 23:43 |
We moved today from Hill AFB to Grand Junction, CO. We were "beside the
road" 5 or 6 times in the last 100 miles. The engine would just slowly
die, usually as I neared the crest of a long grade. A couple of times I
immediately checked fuel injector spray and spark -- both there. After
sitting for 5-10 minutes, it would start and run fine for another 10-30
miles at 60-70 mph, then lay down on the job again. Finally, I
disconnected the toad and SHE drove it the last 50 mies or so. STILL I had
the problem -- it almost died as I pulled into the RV park after 20 level
miles -- though it didn't completely die like it did in the main gate to
Hill AFB.
Because I never lost fuel pressure on my dash gauge, I'm sure it was not
vapor lock. I THINK the ignition control module in the distributor must be
heat sensitive, so I bought and installed a new one this evening.
It's hard to understand "cooling off" during the brief pauses, when "heat
soak" should have been heating things up -- but that's how it worked. I
never stopped for long enough for any real cooling to occur. I'm all ears
for better ideas.
Since Fred told me all I could need to know about Rt.50, except how many
times to sneeze, I've decided that's the route we'll take tomorrow.
Monarch Pass, elev 11,312' should tell whether my diagnosis was correct.
Ken "Shoulder Lover" H.
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] Another Trying Day [message #221488 is a reply to message #221419] |
Sat, 07 September 2013 11:58 |
Kirk
Messages: 80
Registered: April 2008
Karma: 0
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Member |
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MSD Ignition HEI Dust Cover Conversion for a Blaster 2 Coil PN 8401
The PN 8401 Dust Cover allows the use of an external coil with an internal coil GM HEI distributor. This cover replaces the coil in the cap reducing distributor heat build up
Parts Included:
1 - MSD HEI Dust Cover
1 - Y-spliced Pink Wire
1 - Brown Wire
INSTALLATION
1. Disconnect the 3-pin wiring harness and the single Pink wire connector from the distributor cap.
2. Remove the dust cover from the original coil and remove the internal coil.
Note: Leave the rotor bushing in place.
3. Install the MSD Dust Cover using the original screws.
4. Connect the supplied Brown wire to the Brown wire of 3-pin distributor connector. Connect the other end of the Brown wire to the coil negative (-) terminal.
5. Connect the supplied Y-Spliced Pink wire to the single Pink wire (switched 12 volts) and the Pink wire of the 3-pin distributor connector. Connect the other end to the coil positive (+) terminal.
Note: The middle terminal of the 3-pin connector (Black wire) is not used.
6. Install the coil wire to the Cover.
Note: If you plan to install a tachometer, the trigger wire connects to the coil negative terminal.
The wiring diagram wouldn't paste, go to MSDignition.com or summitracing.com/parts/msd-8401
Kirk & Eloise Yeager -
Motorcyclists/RVers/Dog Lovers -
77 Royale 455/TBI/3:55 -
49ers - N. Nevada -
NdnKirk at Gmail dot com
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| Re: [GMCnet] Another Trying Day [message #221489 is a reply to message #221419] |
Sat, 07 September 2013 12:04 |
Kirk
Messages: 80
Registered: April 2008
Karma: 0
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Member |
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MSD Ignition HEI Dust Cover Conversion for a Blaster 2 Coil PN 8401
The PN 8401 Dust Cover allows the use of an external coil with an internal coil GM HEI distributor. This cover replaces the coil in the cap reducing distributor heat build up
Parts Included:
1 - MSD HEI Dust Cover
1 - Y-spliced Pink Wire
1 - Brown Wire
INSTALLATION
1. Disconnect the 3-pin wiring harness and the single Pink wire connector from the distributor cap.
2. Remove the dust cover from the original coil and remove the internal coil.
Note: Leave the rotor bushing in place.
3. Install the MSD Dust Cover using the original screws.
4. Connect the supplied Brown wire to the Brown wire of 3-pin distributor connector. Connect the other end of the Brown wire to the coil negative (-) terminal.
5. Connect the supplied Y-Spliced Pink wire to the single Pink wire (switched 12 volts) and the Pink wire of the 3-pin distributor connector. Connect the other end to the coil positive (+) terminal.
Note: The middle terminal of the 3-pin connector (Black wire) is not used.
6. Install the coil wire to the Cover.
Note: If you plan to install a tachometer, the trigger wire connects to the coil negative terminal.
The wiring diagram wouldn't paste, go to MSDignition.com or summitracing.com/parts/msd-8401
Kirk & Eloise Yeager -
Motorcyclists/RVers/Dog Lovers -
77 Royale 455/TBI/3:55 -
49ers - N. Nevada -
NdnKirk at Gmail dot com
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| Re: [GMCnet] Another Trying Day [message #221493 is a reply to message #221449] |
Sat, 07 September 2013 12:19 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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When Heather and I came that way on US 50 a few years ago we went to Dodge City. Heather hopped on the Amtrak there to get back home. She had to go to work. You can park downtown all night if you wish at the Amtrak station. There was WiFi access on the east end of the parking lot. It is quiet and nice. The eastbound train stops at about 12:30 AM and the west bound at around 5:30 AM. I never heard the westbound one come through.
We looked for Miss Kitty while we were there but we were told that she lives in Florida during the off season.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Another Trying Day [message #221494 is a reply to message #221419] |
Sat, 07 September 2013 12:21 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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Ken
If it turns out to be the module, the heat is from the internal electronic components, not the heat soak from the engine. Often on the electrical components in such things as the module the current flowing through the parts will cause some heat expansion which might open up a circuit. When current stops flowing the gap quickly closes and it might run again for awhile.
Of course you might find that it is not the module.
Emery Stora
On Sep 6, 2013, at 10:43 PM, Ken Henderson wrote:
> We moved today from Hill AFB to Grand Junction, CO. We were "beside the
> road" 5 or 6 times in the last 100 miles. The engine would just slowly
> die, usually as I neared the crest of a long grade. A couple of times I
> immediately checked fuel injector spray and spark -- both there. After
> sitting for 5-10 minutes, it would start and run fine for another 10-30
> miles at 60-70 mph, then lay down on the job again. Finally, I
> disconnected the toad and SHE drove it the last 50 mies or so. STILL I had
> the problem -- it almost died as I pulled into the RV park after 20 level
> miles -- though it didn't completely die like it did in the main gate to
> Hill AFB. :-)
>
> Because I never lost fuel pressure on my dash gauge, I'm sure it was not
> vapor lock. I THINK the ignition control module in the distributor must be
> heat sensitive, so I bought and installed a new one this evening.
> It's hard to understand "cooling off" during the brief pauses, when "heat
> soak" should have been heating things up -- but that's how it worked. I
> never stopped for long enough for any real cooling to occur. I'm all ears
> for better ideas.
>
> Since Fred told me all I could need to know about Rt.50, except how many
> times to sneeze, I've decided that's the route we'll take tomorrow.
> Monarch Pass, elev 11,312' should tell whether my diagnosis was correct.
>
> Ken "Shoulder Lover" H.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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