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  Hello, I'm having trouble with a high idle problem I hope someone can help. I have a 2000 ford crown victoria police interceptor with 156k miles. After the car has been driven for 5-25 miles, and is turned off for about 15 minutes, when restarting, the engine idles very high with a squeal. This usually lasts for about one minute or so and then it idles back to normal and the squeal is gone. I've also noticed my headlights flicker during this episode. The check engine light is "not" on. It just starting doing this in the last week or so. The temp here in the midwest has been very cold, highs +10f lows -5f. There is also a high pitched whine coming from the engine compartment upon initial cold startup, and sometimes for a few miles driving. It's not the belt,tensioner or idler pulley, they have all been replaced recently.  Nothing too major at this point, but, I'd like to repair it before it causes me more problems later. I do have the ford service tech manuals and a haynes manual. They state it might be a vacuum leak or fuel injection or engine control sys malfunction, kinda vague. If you have any idea please let me know. Thank You.

mr. alternator is very unhappy

what i was thinking too???(alternator) have it checked..

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sevety9

         Thanks for the feedback. I've done a alternator check previously and found no problems. I have a voltage gage on my radar detector. It reads between 13.8 to 14.2V. all the time. I don't think an alternator malfunction would cause a high idle. Could it be the Idle Air Control unit?

your alternator has got nothing to do with the idle it is your cold water cencer

what the heck made me think alternator,,

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sevety9

electrical RIF causes all sorts of problems

you wouldn't think ignition coils would trigger the ABS light but they do

you might want to go with the 130 amp cop car alternator