1998 Honda Civic Idle air control system

1998 HONDA CIVIC
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RDFREE
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Engine Mechanical problem
1998 Honda Civic 4 cyl Front Wheel Drive Automatic 71OOO miles

My 1998 Civic failed emmisions testing with the diagnostic Idle air control system . I just bought the car for my daughters first car and seems to drive well but the idle does rev up and down when car is put in park after driving a little. Any Ideas?
Dec 11, 2008 at 4:19 PM
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ZACKMAN
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Try cleaning your idle air control valve, just make sure that the pintle doesn't go out too far, it may not go back in. If that doesn't help, you have to replace the IACV.
Dec 11, 2008 at 10:31 PM
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RDFREE
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Where is this Iacv ?
Dec 11, 2008 at 10:43 PM
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ZACKMAN
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Non-VTEC (CX, DX, LX), top left of engine, on throttle body


https://www.2carpros.com/forum/automotive_pictures/55316_civicengine_1.jpg

VTEC (HX, EX, Si) Automatic transmission: on the throttle body Manual transmission: on left side of intake manifold


https://www.2carpros.com/forum/automotive_pictures/55316_civicexengine_1.jpg

Dec 12, 2008 at 11:15 PM