Posted By: N9671X2
99 2500 Diesel, tranny slipping/throttle position senso - 05/07/13 02:10 AM
1999 2500 4x4 Quad cab Diesel automatic, 90k miles, all stock. Noticed today pulling empty enclosed car trailer that it seems the tranny is slipping ( I know these are notorious ). Could it also be the throttle position sensor instead? It seemed like with it hardly being under load the tach seemed to be going all over. I did unhook the trailer and took it out tonight and wasn't hardly noticable. Am I crazy thinking/hoping it is just the sensor? Didn't scan it, but dash showing no idiot lights or faults. Tranny flushed/filter change less than 10k ago. Pulled the trailer about 25 miles today, no burning or hot smell.
Posted By: NITROUSN
Re: 99 2500 Diesel, tranny slipping/throttle position senso - 05/07/13 03:02 AM
The sensor will not cause slipping. Sounds like you have internal leakage/slipping. What fluid are you using?
Posted By: N9671X2
Re: 99 2500 Diesel, tranny slipping/throttle position senso - 05/07/13 03:14 AM
I know it sounds dumb, but I am not completely sure it was slipping, been reading up on it and it may be more of an electrical issue? It just seemed like the was just bouncing around a lot. Local shop flushed and did filter, not sure what they used, but have pulled without issue up til today. The truck does not get driven much. Was not low at all on fluid, and it looked like new. Here is what I am reading on
http://answers.edmunds.com/question-1998...blem-29412.aspx
Posted By: Silver70
Re: 99 2500 Diesel, tranny slipping/throttle position senso - 05/07/13 07:15 PM
A friend of mine had a problem with his and it turned out to be the computer. This was after having the trans rebuilt.
Posted By: d-150
Re: 99 2500 Diesel, tranny slipping/throttle position senso - 05/07/13 10:02 PM
could it be front band? what gear you feel it slip?
Posted By: 71yelladustr
Re: 99 2500 Diesel, tranny slipping/throttle position senso - 05/08/13 03:23 AM
Posted By: J_BODY
Re: 99 2500 Diesel, tranny slipping/throttle position senso - 05/08/13 04:01 AM
I agree with 71yella.... been there done that.
Posted By: Joshs68
Re: 99 2500 Diesel, tranny slipping/throttle position senso - 05/08/13 04:10 AM
My 00 did the same thing, I used the filter. Fixed it instantly.
Posted By: N9671X2
Re: 99 2500 Diesel, tranny slipping/throttle position senso - 05/08/13 01:28 PM
I think 71yella described it to a tee, I think it is the convertor and not the transmission itself. Won't have time to mess with it for a few days, but will follow his steps and post an update.
Posted By: N9671X2
Re: 99 2500 Diesel, tranny slipping UPDATE - 05/14/13 12:41 AM
Thanks for all the replies, did as mentioned, cleaned all the battery posts, rerouted ground away from alternator and wrapped in foil. Problem solved !!