| Update on Tranny [message #84011] |
Mon, 10 May 2010 21:47  |
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WD0AFQ
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
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Senior Member |
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There is none. We got home today and I need to get back to trying to figure this thing out. Took the cooling lines off last week to make sure I could blow through the cooler. No problem there.
Could the kickdown on the accelerator have anything to do with this? The problem is it kicks down to second while running down the road at hiway speed. Will not kick back up. I thought it might be the shifter linkage but that was the last thing they adjusted at Miguel's. Looks like if it was the linkage I could wiggle it back into 3rd gear. It just goes into neutral when I bump it up.
I am open to any thoughts.
Thanks,
Dan
3 In Stainless Exhaust Headers
One Ton All Discs/Reaction Arm
355 FD/Quad Bag/Alum Radiator Manny Tran/New eng.
Holley EFI/10 Tire Air Monitoring System
Solarized Coach/Upgraded Windows
Satelite TV/On Demand Hot Water/3Way Refer
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| Re: [GMCnet] Update on Tranny [message #84039 is a reply to message #84034] |
Tue, 11 May 2010 06:15  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Dan,
Don't feel bad if that's what's happening. Crossing the Texas panhandle in
'96, driving our '90 Airstream Land Yacht, every time I slowed down the
transmission downshifted. We spent that night at Palo Duro Canyon, from
where I called my RV dealer friend in NC. He called back the next morning,
after talking to his service manager, with the same diagnosis.
The Airstream had an auxiliary electric fan. After I installed a manual
switch parallel to its thermostatic control, and used it, the symptom never
recurred.
Talk about embarrassed -- worse than having my pants fall down!
Ken H.
On Tue, May 11, 2010 at 2:10 AM, Jim Maher <hasbeen24@msn.com> wrote:
>
>
> Dan, sometimes I just get these crazy thoughts that jump back into my mind
> from earlier days. Bear with me while I run this by you and see what you
> think. When GM came out with what they called the HOT chassis in 1986 I was
> working as service manager at an RV dealership here in the Phoenix area. We
> started to get complaints from customers along the same lines that you are
> stating, namely "the transmission is shifting down". I have not read the
> full story on yours so I may be way off the mark. What we found was not the
> trans dropping down a gear but the fan kicking in to cool down the engine
> temperature. We proved this by watching the temp gauge rise, fan kicking on
> with the loud roaring noise, temp gauge lowering. If you have a tachometer
> it would be another way of determining if it is actually dropping down a
> gear. I know you had a new engine installed and if they installed a new
> viscous fan assembly along with it that would be a different sound to you.
> Hope this helps, Jim
> _______________________________________________
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_______________________________________________
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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] Update on Tranny [message #84066 is a reply to message #84025] |
Tue, 11 May 2010 10:33 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Jim,
That is a real good point as this is what lot think.
In this case, I can tell you Dan is very aware of this.
I love fan clutch,but when they lock up hard, I swore it feels like
the trans as it jerks at times.
It happened once and I thought it was the trans.
On Mon, May 10, 2010 at 8:43 PM, Dan Gregg <gregg_dan@hotmail.com> wrote:
>
>
> Ok, thanks Emery. Sounds reasonable to me.
> Dan
> --
> Dan & Teri Gregg
>
> danandteri.blogspot.com
>
>
>
> ///Halon Automatic Fire Extinguishers
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Update on Tranny [message #84082 is a reply to message #84066] |
Tue, 11 May 2010 12:33 |
shawnee
Messages: 422
Registered: February 2004
Location: NC
Karma: 0
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Senior Member |
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| jimk wrote on Tue, 11 May 2010 11:33 |
Jim,
That is a real good point as this is what lot think.
In this case, I can tell you Dan is very aware of this.
I love fan clutch,but when they lock up hard, I swore it feels like
the trans as it jerks at times.
It happened once and I thought it was the trans.
-
Jim Kanomata
A
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Jim.
I had a Hayden fan clutch on the coach when we were going to the Rayne Convention. Every so often it would come on when there was no reason and it locked up. It felt like I had slammed on the brakes on. It would release after about 1/2 mile. I thought then if we could do that on purpose going down a mountain, it would be like a truck Jake brake. Couldn't figure out how to do that though.
Gene Dotson
74 Canyonlands
www.bdub.net/Motorhome_Enhancements New Windows and Aluminum Radiators
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| Re: [GMCnet] Update on Tranny [message #84099 is a reply to message #84082] |
Tue, 11 May 2010 15:29 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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The big rigs have a electonic controlled fan clutch.
They make it only for Diesals as they run at lower RPM.
On Tue, May 11, 2010 at 10:33 AM, Gene Dotson <shawnee@charter.net> wrote:
>
>
> jimk wrote on Tue, 11 May 2010 11:33
>> Jim,
>> That is a real good point as this is what lot think.
>> In this case, I can tell you Dan is very aware of this.
>> I love fan clutch,but when they lock up hard, I swore it feels like
>> the trans as it jerks at times.
>> It happened once and I thought it was the trans.
>> -
>> Jim Kanomata
>> A
>
>
> Jim.
>
> I had a Hayden fan clutch on the coach when we were going to the Rayne Convention. Every so often it would come on when there was no reason and it locked up. It felt like I had slammed on the brakes on. It would release after about 1/2 mile. I thought then if we could do that on purpose going down a mountain, it would be like a truck Jake brake. Couldn't figure out how to do that though.
> --
> Gene Dotson
> 74 Canyonlands
> www.bdub.net/Motorhome_Enhancements New Windows and Aluminum Radiators
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Update on Tranny [message #84108 is a reply to message #84099] |
Tue, 11 May 2010 15:58 |
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WD0AFQ
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
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Senior Member |
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Well, I think the governor is coming off tomorrow or Thursday.
Dan
3 In Stainless Exhaust Headers
One Ton All Discs/Reaction Arm
355 FD/Quad Bag/Alum Radiator Manny Tran/New eng.
Holley EFI/10 Tire Air Monitoring System
Solarized Coach/Upgraded Windows
Satelite TV/On Demand Hot Water/3Way Refer
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