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Tractor Talk Discussion Forum

O/T '97 Dodge trans trouble

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MeAnthony

07-15-2006 18:49:26




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Ok, here's the deal. 1 ton 4x4 Cummins with automatic. Loaned it to a family member last night. Today I jump in to go somewhere and its not shifting in to overdrive. Fluid is fine. Other gears are fine. Is this maybe an electrical problem? I've got a Haynes manual, but it ain't much help with this particular problem. I was thinking the overdrive was actuated by a solenoid? Is the throttle position sensor on this circuit also? Testing procedures for the pieces involved?

Its a lot of question, I know, but I don't have a lot of time or money to spend fixing this beast. Any suggestions or information is greatly appreciated.

Thanks y'all,
Anthony

P.S. Trans fluid/filter changed approx. 6 weeks ago. Filter was dirty (as expected; previous owner hadn't changed it in about 3 years) but the pan was quite clean. No shavings/debris except a coating on the magnet. For the time frame involved, I was rather surprised how little trash was in the pan.

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Mike S 806/H

07-16-2006 10:40:38




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 Re: O/T '97 Dodge trans trouble in reply to MeAnthony, 07-15-2006 18:49:26  
your last shift in the trans is the locking torque converter, it does feel like a shift, I have a 94 Dodge with the Cummins, your problem could be the brake light switch under the dash, I have had this problem, The switch is adjustable, you have to push down on the brake pedal and then pull out on the switch a little,( it may pull a little hard a make a clicking sound) this will also make the cruse control not work,

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MeAnthony

07-16-2006 20:09:58




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 Re: O/T '97 Dodge trans trouble in reply to Mike S 806/H, 07-16-2006 10:40:38  
I'm no transmission expert, and I don't want to sound argumentative, but the shift pattern I have is identical to running it with the overdrive turned off. I get 1-2, 2-3, and then a little bit of something. Only drops a couple hundred rpm on the last shift. Currnetly, it runs approx. 2500 rpm at 60, whereas before, when it shifted all the way, I would get 1-2, 2-3, a little bit(which I assumed was the TCC) and the final shift(which I assumed was O/D) would drop it to approx. 1700 rpm at 60 mph.

Thank you for taking the time to respond,
Anthony

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John S-B

07-16-2006 10:23:06




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 Re: O/T '97 Dodge trans trouble in reply to MeAnthony, 07-15-2006 18:49:26  
Maybe this is obvious but is the control for the overdrive off? My '95 has a button on the dash to the right of the steering wheel to keep it from going into overdrive for heavy towing, check that if you have it.



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MeAnthony

07-16-2006 20:13:58




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 Re: O/T '97 Dodge trans trouble in reply to John S-B, 07-16-2006 10:23:06  
Yes, I've got that button. I've tried switching on and off several times, hoping I'd get lucky. Hasn't happened yet.

Thanks for the suggestion, though. Sometimes its the most obvious solution that is the hardest to find.

Anthony



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champspa

07-16-2006 05:14:37




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 Re: O/T '97 Dodge trans trouble in reply to MeAnthony, 07-15-2006 18:49:26  
go to the website www.turbodieselregister.com and as a guest look up the question you want answers to.



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shinnery

07-16-2006 23:28:48




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 Re: O/T '97 Dodge trans trouble in reply to champspa, 07-16-2006 05:14:37  
I think that button opens a ground for a solnoid when you don't want O.D., maybe you have an open wire between trans and switch. Or check for a lost ground in dashboard.
Bryce



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