at idle my revs move up and down a bit

2004 FORD FALCON
140,000 MILES
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FORDXR6
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Hi i have a ford falcon xr6, ,does it in park, neutral and drive, what could it be? also car shakes a little bit. (the engine) NON turbo, auto.
Feb 7, 2012 at 9:06 AM
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RASMATAZ
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Clean the idle air control valve and see what happens-
Feb 7, 2012 at 9:16 AM
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FORDXR6
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ok thanks, how could i find out where this valve is situated?
Feb 7, 2012 at 9:29 AM
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RASMATAZ
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The IACV should be on or near the throttle body

go to this link for more info:

https://www.2carpros.com/articles/throttle-actuator-service

Feb 7, 2012 at 10:05 AM