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Posted on Jan 02, 2017
SOURCE: 1988 Ford Crown Vic Strange Idle
When you turn the key on does the check engine light come on? If not it may be burned out. It sounds like a MAP sensor or an O2 sensor is bad. I would suggest taking it to autozone as they do free diagnostic and seeing if a code comes up. If it is a sensor it should, if not it may be the idle sensor not reading right in the ECU. More than likely it is one of the sensors though.
Posted on Jun 23, 2009
maf senser a tps senser are linked ,by they both sense the load on the engine ,one does it throttle opening and the other by air density u may check the tps and also for excessive air leaks around induction system
Posted on Feb 21, 2010
its ur 'auto choke', its supposed to run a little high at first while it warms up, but if its too high u may have a faulty unit.
Posted on Jun 19, 2010
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