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TCM or transmission problem.

 
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Old 30 Oct 2011, 10:10 pm
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Default TCM or transmission problem.

My wife's 03 went crazy yesterday. She said it started shaking while on the X-way, so she pulled over. When I got there, it would start fine and even drive slowly in first for a minute or two before slipping out of gear. It would shake if I gave it gas. Wouldn't go into 2nd but it didn't die. Got a few codes. P0131, preconverter O2 sensor low input voltage. P0440, P0441 and P0456, all about evap system failure/leak. I think those are unrelated to the problem. My wife said the check engine light came on a couple days earlier and gave her a code P0700, then the check engine light went off. I didn't get that code when I ran them. 0700 is a transaxle control system malfunction. Could this be a loose connector to the TCM? Maybe a bad TCM? I never got a P0604 or 0605, indicating a TCM fault. What could this be?
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Old 31 Oct 2011, 01:11 pm
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Default Re: TCM or transmission problem.

Well, I pulled the damn thing out. That was probably a rash decision, but I was hoping I would find something obviously wrong with it. The connector did have some wiggle to it, which seems wrong. Earlier this summer we had an overheating problem. I flushed the radiator and it's been fine since. Could some moisture have gotten in and fouled that module up? Do you think I'm way off track here? I never got a TCM fault code, but maybe it just had an intermittent power interruption.
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Old 31 Oct 2011, 01:21 pm
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Default Re: TCM or transmission problem.

Try disconnecting battery for a while - it resets all electronics and would rule out a temporary glitch.
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