Question about 1990 Cadillac Deville
Does idle rough in gear if so may have bad fuel injectors. not saying that it is not transmission or joints, need to make sure the engine is running properly first.
Posted on Nov 15, 2014
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Posted on Jan 02, 2017
Several possibilities having to do with the torque converter clutch and TCC solenoid:
1. Replace transmission fluid, use a synthetic Dex VI, do a complete flush with pan removal and filter replacement
2. Check all grounds related to the transmission control solenoids, clean them and ensure good electrical contact.
3. Rebuild transmission, the TCC friction material is worn out.
Posted on Jan 07, 2010
how about putting the van in drive with one foot down hard on the brake and rev the engine, does it smooth out now? if it smooths out, i would pull the air cleaner tube to the throttle body and spray the throttle body with carb cleaner, be careful if using the red tube, I have had it blow off before into the intake, not good, open the accelerator and spray it out really good, it will to start until all the cleaner clears out.
Posted on Jun 29, 2010
Could be tranny mounts, or it could be your differential going bad. Also, if you have a 4.9 instead of the 4.6 Northstar then there has been an engine swap, and you could be experiencing ATM or ECM problems.
Posted on Jan 09, 2013
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