vehicle is in limp mode, no speedo and displays code 743 torque converter clutch solenoid. needs a new tcm?
trans fluid leaking into the connector plug to the tcm on 2002 Dodge Caravan
seek a free diag and est from aamco then shop prices
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You have two distinct issues. Each one is each to repair on it's own. Be patient. 1) Speeds not working... if the other gauges are working its either the connector of the speed sensor on the transmission. Replace it. If the other gauges aren't working either.. you have cold solder joints on the connector on the circuit board assembly of the instrument cluster. This is an easy fix. Just remove the instrument cluster, new a short handled philips screwdriver, a medium handled one, and a small flat blade screwdriver to raise the little flap on the connector before pulling it apart. There a handful of screws, the two under the parking brake release are recessed. The air grill on the side of the dash, next to the door must be removed, the colored panel next to the OBDII socket and the faring surround of the instrument cluster. Take the instrument cluster out and unscrew the back to expose the circuit board... remove it and re-solder each pin on the connector fitting on the flat (reverse) side of the circuit board using a low watt soldering iron (25-30 watts). 2) Replace the transmission torque converter solenoid. Easy... has one small bolt holding the connector on top and then 3 other bolts. Use Simple Green and an old toothbrush to clean it up well before removal.. cleanliness is the key to a successful job here! Use a safety razor to scrape off the old gasket entirely. I used three straws interconnected to suck out the channel to remove the gasket debris and let them flow onto a paper towel until the channels are cleaned out down to the very bottom. Replace with new solenoid. Re-connect your battery and start your car to check the fault codes.