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No, that has nothing to do with idle speed.

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โˆ™ 2011-07-09 23:58:56
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Q: Can a bad battery cause a car to idle high?
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Will a bad battery cause your car to lose power at higher rpm will it idle low at a stop?

No, but a bad alternator will.

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A bad camshaft can cause your engine to idle high and overheat. A fuel injector pump that needs to be adjusted can also cause the same problems.

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What could cause a extremely high idle on a 1992 Ford Thunderbird?

possible cause of high idle could be that your idle contol switch / valve has carbon build up on it. remove and clean with carburetor cleaner. let it dry completely before re-installing it. idle should come down if not it has probably gone bad and need to be replaced.

1992 MGMdisconnected -battery post then reconnected will not idle now?

Other than resetting the ECU, disconnecting the battery should not cause the bad idle. You have reset the ECU and it may need some time and driving cycles to idle correctly. But I am doubtful this is the problem. I would suspect this is just a coincidence, and you have another problem.

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That would be the alternator, voltage rgulator, or even a bad ground. Email MYCOMATT167@YAHOO.COM follow up

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