1994-2004 V-8 GT, GTS, Bullitt, Mach 1, and Cobra

idle

Old Jul 20, 2014 | 01:03 PM
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idle

My car is idling really rough. I held the idle at 1000 rpm let off the gas and it jumped up to 2000 rpm can anyone give an Idea of what's going on?
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Old Jul 20, 2014 | 09:09 PM
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Your IAC valve could be on the Fritz. Have you ever cleaned it/replaced it? How many miles on your car? Any recent upgrades to the air or fuel systems on the car?
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Old Jul 21, 2014 | 05:48 AM
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Cleaned it recently but it didn't make a difference haven't replaced it. Way over 145000. And no upgrades. It ran for 2 months without an air filter
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Old Jul 21, 2014 | 05:50 AM
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And it has a knocking noise when idling
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Old Jul 21, 2014 | 08:21 AM
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You may have damaged a part of the valve train. But it's best to have a shop check it out. You could also run a code reader and see if anything comes up.
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Old Jul 21, 2014 | 05:49 PM
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Changed the power steering pump and the idle is better..
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