trans problem or pcm

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Jun 6, 2006 | 10:52 PM

powersmoker

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trans problem or pcm

i have a 97 psd with a suncoast trans and conv. with about 4000 miles on it all of a sudden last week just driveing down the road at 80 my trans shifted out of od and into 3rd gear. after removeing my head from my dash i quickly hit the od button and and it went back into od went about 1 mile and did it again hit button and went back to od. so on and so forth no codes and every thing else works great just shifts all the time by it self now.please

Jun 7, 2006 | 12:37 AM

F350JOHN

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From: Colorado Springs, CO

I have encountered the same problem with my '96 PSD auto. On mine, while accelerating it will go 1st, 2nd, then OD !

It skips a gear. I have been told it could be a "modjulator" I don't know if this is the same as a PCM......or not.

I hope someone here can help us.

Jun 7, 2006 | 06:23 AM

Cuda_jim

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From: MICHIGAN

If the only thing going wrong with your tranny is OD then the little wire going to the button may be shorting out. I am unsure how th check this but someone will jump in with othe ideas.

CJ

Jun 7, 2006 | 06:34 AM

tjbeggs

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From: Silver Lake Dunes, MI

to check the wires for the OD button you need to pull the top of the clam shell off you steering column and you will be able to see if one of the very small wires have broken or almost broken. just soldier it back to gether and tape it up.

Jun 7, 2006 | 11:50 AM

Ron McCafferty

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I have repaired several trucks for what tjbeggs has described. Most of em the wire broke. Easy enough to fix. And inexpensive. May want to check routing especially if you have tilt steering.

Jun 7, 2006 | 01:36 PM

powersmoker

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great thanks i will check it out and see what i can find.

Jun 7, 2006 | 01:44 PM

F350JOHN

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From: Colorado Springs, CO

It would be great if anyone could help me with the problems I mentioned above, mine is more of a gear skiping problem and a refusal to upshift.

Thanks!
John