Question about 1999 Mercury Cougar
When i come to a complet stop the car idles low then when i go to take off the car doesnt want to move then when it does start moving it backfires and jolts then the check engine light blinks, then when stopped and the car idle lows the lights pulse ive replaced the alternator 3 times i just cant figure out what the problem is please help thanks
When the check engine light blinks that means you have a misfire in a cylinder
Posted on Sep 12, 2009
My car idle was really low stopping and sometimes would choke out but i put new plugs and wires and solved the problem but check engine codes
Posted on Jun 29, 2009
Idle sensor is bad. Find a autozone for check engine light they will connect to computer for free, and tell u what codes come up they can give u a printout also.
Posted on Jun 28, 2009
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Posted on Jan 02, 2017
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Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
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