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IACV Clicking Resolution

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Old 12-14-2004, 02:28 PM
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IACV Clicking Resolution

I had the same problem with my IACV valve clicking that many others have had also. The sensor would click in sets of three with key in the "on" position and with the engine off or running. This problem caused very hard starts, and the car was virtually impossible to start if I couldn't get it going on the first try.

To resolve this I removed the IAC assembly, disasembled the IACV and cleaned the entire thing, except for the wires, with throtle body cleaner. I then reasembled and installed the IAC assembly and proceeded to start the car. The clicking sound persisted, so I went to the ECU, turned the screw to self-diag mode, then turned it back to the regular position. When I turned the car back on, the clicking was gone!! Hope this helps someone.

--FirstMaxima
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Old 04-05-2010, 01:57 PM
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Originally Posted by firstmaxima
I had the same problem with my IACV valve clicking that many others have had also. The sensor would click in sets of three with key in the "on" position and with the engine off or running. This problem caused very hard starts, and the car was virtually impossible to start if I couldn't get it going on the first try.

To resolve this I removed the IAC assembly, disasembled the IACV and cleaned the entire thing, except for the wires, with throtle body cleaner. I then reasembled and installed the IAC assembly and proceeded to start the car. The clicking sound persisted, so I went to the ECU, turned the screw to self-diag mode, then turned it back to the regular position. When I turned the car back on, the clicking was gone!! Hope this helps someone.

--FirstMaxima
did you turn the car on? i hear a clicking when its on
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Old 04-06-2010, 04:33 PM
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Originally Posted by firstmaxima
I had the same problem with my IACV valve clicking that many others have had also. The sensor would click in sets of three with key in the "on" position and with the engine off or running. This problem caused very hard starts, and the car was virtually impossible to start if I couldn't get it going on the first try.

To resolve this I removed the IAC assembly, disasembled the IACV and cleaned the entire thing, except for the wires, with throtle body cleaner. I then reasembled and installed the IAC assembly and proceeded to start the car. The clicking sound persisted, so I went to the ECU, turned the screw to self-diag mode, then turned it back to the regular position. When I turned the car back on, the clicking was gone!! Hope this helps someone.

--FirstMaxima
Did you reset the ECU? I will have to look into this.

Thanks for the heads up.
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Old 04-06-2010, 10:34 PM
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I only hear the click from IACV when I turn AC on.....
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Old 04-20-2010, 04:06 PM
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Had the same problem. Turned off the car, engaged diagnostic, dis-engaged, then turned on. Worked like a charm. Thanks for the help.
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Old 07-10-2011, 12:29 AM
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i know i am bring up an old thread but where is the switch to switch the ecu to diagnostic mode
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Old 07-10-2011, 10:14 AM
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It is the screw on the ECU that you turn to make the check engine light blink to read the DTC error codes.
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Old 07-10-2011, 03:42 PM
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is it accessable???
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Old 07-10-2011, 03:49 PM
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how do i get to this screw...do i have to remove the ecu from its place???
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Old 07-10-2011, 05:49 PM
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Originally Posted by sleek3
how do i get to this screw...do i have to remove the ecu from its place???
You read the stickies, that's how.
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Old 07-10-2011, 06:01 PM
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thanks man i found it.....im a dumb aussie...lol
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Old 10-13-2011, 08:08 PM
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just to confirm. thus far it has remedied my problem as well
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