Mechanics

IDLE AIR CONTROL SYSTEM

1998 Honda Civic

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?
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Rdfree
December 11, 2008.




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.
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Tiny
Zackman
Dec 11, 2008.
Where is this Iacv?

Tiny
Rdfree
Dec 11, 2008.
Non-VTEC (CX, DX, LX), top left of engine, on throttle body


http://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


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


Tiny
Zackman
Dec 12, 2008.

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