Question about 1996 Mercury Grand Marquis
OBD check showed only possible bad idle air controller or vacuum leak; I couldn't find a vacuum leak. Could a bad IAC cause the car to be difficult to keep idling when cold? Problem began few weeks ago, car would start and idle, but would die when put in drive; then problem progressed to the point where accelerator has to be depressed to get to start when cold and must be kept revved until warm in order to keep idling. After that the car seems to run fine. Thanks for your help.
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Posted on Jan 02, 2017
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