Fiero Torque Converter Clutch- Troubleshooting and Repair
The symptoms for a bad TCC are obvious: If your car comes to a stop and the engine stalls, but restarts (in neutral), and immediately stalls again if you put it in drive, your TCC is shot. You can verify this by disconnecting the plug facing forward on the transmission near the oxygen sensor. If the symptoms go away, your TCC is bad. (If the symptoms stay your TCC may still be bad). This is caused by sediment sticking to to the electromagnetic portion of the solenoid. The part number of a replacement solenoid with an improved seal is P/N 8652379.
Replacing the TCC seems difficult at first, but it can be done with the transmission still in the car. The procedure described is for the V6, but the L4 will be similar. You’ll need an assortment of wrenches and sockets, 10mm, 13mm and 15mm, and a couple of short and long extensions. Do yourself a favor and get a gasket scraper.
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