2nd to 3rd shifting problem

2nd to 3rd shifting problem

12-11-2006, 07:43 PM

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J Shocik

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Join Date: Jun 2002 Location: Cherry Valley, Mass. Posts: 252

2nd to 3rd shifting problem

My '97 w/105k & an automatic trans. is having a problem shifting from 2nd to 3rd. It seems like it doesn't want to go into 3rd, and drops back to 2nd. It does this for a little while when the temps are around freezing, then runs fine when the truck is warmed up. If the temps are above 40, it runs fine. I did a search & couldn't find anyone having these symptons w/their truck.
While driving first thing in the AM when it is cold & the tranny's acting up, if I let off the throttle & get back on it, it seems to shift OK. Once it's warmed up, it runs fine. Is this a throttle position sensor issue?? Or something else? The fluid was last changed about 12 mos. ago(15K mi.)Thanks in advance, John

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The Truck: 1997 4X4 Reg. Cab; 3:54 gears; LOADED from the factory; 8ft. Fisher P/A Plow; Prime-Lok Fuel Filter relocation Kit; Super-Tuned by Blue Chip Diesel; HP Valve body on tranny.
My plow may be yellow, but the truck isn't.

The Toy: 2004 H.D. Ultra Classic. The ultimate cruiser...

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