IAC valve is not working after square top/turbo install. - Miata Turbo Forum - Boost cars, acquire cats.

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Old 08-26-2014, 05:14 PM   #1
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Default IAC valve is not working after square top/turbo install.

I have a 1999 Miata with a DIYPNP, FM turbo kit, and a square top installed. I have had the DIYPNP installed for about 6 months and the IAC valve was working just fine until i installed the square top and turbo about a month ago. Since then I have not been able to get my AC idle up to work at all (it was fine before). I measured the iac connector and I am not seeing 12v or a switched ground. There are 2 unused plugs from when I installed the turbo and manifold but one of them is from the old O2 sensor and I believe that the other is from the VICS solenoid. Any help is appreciated. Thanks
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Old 08-27-2014, 06:06 PM   #2
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Did you forget to bolt back up a ground wire?
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Old 08-29-2014, 02:04 AM   #3
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I believe that the IAC valve is supposed to run off of a 12v positive source and a switched ground so I don't think that is the issue. But I am pretty sure there was only the one ground wire that connects to the bracket that holds the 2 halves together and I put that one back on.
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