Question about 1999 Lincoln Continental

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No idle My car won't idle and I can't drive it unless I keep the accelerator depressed. What could be going on?

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  • Anonymous Feb 05, 2009

    I'm having the same problem..thank you for the posting

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This sounds like an IAC (Idle Air Control) motor problem, this regulates air coming into the engine with the throttle plate closed, if you look near the throttle body you will see a metal cylinder with 2 10mm bolts holding it in place, replace it and you should be fine, most of the time this wont give a code or a check engine light. Most parts suppliers will know what you mean by IAC motor when you go to get one it may be wise to bring the old one with you. Also as a temporary fix you can take the part off and clean the inside with carb cleaner and see if it helps.

Posted on Nov 14, 2008

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There are a few things that could cause this problem.let's start with the cheapest.fuel filter clogged not letting enogh gas flow.a hard miss can also be caused by a worn distributer cap.if your check engine light is on have a free test ran at your local auto parts store.

Posted on Nov 14, 2008

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Why do I have to depress accelerator to keep idling?


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this is usually due to a dirty throttle body. just beware if you do try to clean it you will need to preform the idle relearn procedure. this does work, ive done it personally.

A. Accelerator Pedal Release Position Learning Procedure.
1. Make sure that the accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds (how would you know if you get it right?)


B. Throttle Valve Closed Position Learning
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch is “ON”.
3. Turn ignition switch is “OFF” wait at least 10 seconds.
Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound (i never get this right because i never heard anything)

C. Idle Air Volume Learning (Throttle Position Learning)
It's best to time with a watch/clock.

1. Perform “Accelerator Pedal Released Position Learning”.
2. Perform “Throttle Valve Closed Position Learning”.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Conform that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
6. Repeat the following (steps 7a, 7b) procedures quickly five times within 5 seconds.
7a. Fully depress the accelerator pedal (HARD)
7b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the Check Engine Light (CEL) stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the CEL is ON.
10. Start engine and let it idle.
11 Wait 20 seconds
12Rev up the engine two or three times and make sure the idle speed and ignition timing are within the specifications. (this is fine because SES light lets you know if you did it right the way it blinks)

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