I've been struggling with my tranny for a year now. Here's a description of the problem and what I've tried so far: (car has 150.000 miles). I'm about to put in a new tranny any day now, but before I start maybe somebody have some more input on the matter...
First of all, transmission works just great when cold. Problems start when it's heating up. When engine is so warm that the LO engine fan has engaged it start to shift VERY hard to second and occasionally goes into limp mode. If I then leave the engine idling until engine fan goes into HI, everything goes bananas. It engages forward drive but when it's supposed to go into 2:nd it goes into: nothing... like neutral. At that point the only gear that engages is the Reverse, but with a loud noise. If I turn the car off and restart it does engage fwd drive but same thing happens again when it's supposed to go into 2:nd: meaning nothing. Leaving the car to cool off it works ok again.
Chrysler dealer scanned the trans and gave fault code: P1784, L/R clutch sense circuit. (How they managed to get an OBDII code from my -95 is beyond me, but anyway...)
I've been hoping it's some minor or electrical problem as it works very smooth when cold, so this is what I've tried so far:
-Change of a solenoid pack
-Changed the plastic 2/4 accumulator piston to an aluminium one
-New Output- and Input speed sensors
-Found a TCM at a wrecker's with only 50000 miles, and funny thing is that it worked great for a week! I thought the problem was solved... but nope.
I have had my hopes up that it can be something electrical related to the engine fan's engagement, but looks like it is an internal problem after all (related to heat). The thing that buggers me is that it works GREAT when cold - semi cold.. Any ideas?
Now, I bought a tested and working A604/41TE with 106.000 miles for a very good price, and am about to install it any day now. One question though: My van is the short Voyager, whereas the trans I bought is from a Grand Voyager. As both are 3.3's, AWD and 1995 it should however be exactly the same transmission huh?
Any input much appreciated!
/Mat