1991 olds cutlass supreme with a3.1 v-6 the engine dies at idle when stopping the car in traffic. no fault codes show while using the check engine light for codes. have changed the catalitic convertor, spark plugs and wires and ignition module but the problem still exist. the local auto shop can't figure it out
I am having a similar problem, but there is no check engine light. It seems that mine dies at the light or running, if the rpm's drop. I am wondering if the Idle air control valve is bad or possibly the ERG valve?
Look for a vacuum leak. Also check any air lines going to the transmission.
Be sure no air hoses under the dash are broken.
Last for this try - be sure the fuel filter is good. If you do not remember when the last time the fuel filter was replaced - replace it and check the air filter too. To test - remove the air filter before changing the fuel filter and see if there is a noticeable change in the way the car runs.
Try the fuel injectors. mine is having the same problem and that is wat the shop here is telling me.
Location of ESC module on a 1992 olds cutlass supreme 3.1L
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