Question about 1992 Cadillac DeVille
Problem has been getting worse over about a month to where it is dangerous. Got E12 and E412 codes so replaced the distributor with little improvement. Acts like a fuel delivery problem or bad TPS but no trouble code to indecate such. Your expert diagnosis and suggestions would be most appreciated.
Had the same problem on a 1993 sedan deville, replaced $700 in parts finally found engine was not grounded replaced negative battery cable, try jumper cable from negative side of battery to engine.
Posted on Feb 24, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Apr 12, 2013 | Cars & Trucks
Engine stalling issue at low speeds
is commonly caused by a dirty automatic idle speed control valve and
throttle valve. Buy a can of throttle valve cleaner from NAPA or
Carquest (made by CRC chemicals) and spray it into the air intake
while the engine is running, use up about 1/2 the can, engine will
try to stall hold the speed up, shut it down and let it soak for 30
minutes, restart and blow out the remaining fluid, shut it down and
disconnect the negative battery cable for 5 Min's to reset the base
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