Need some help. Idling issue.

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Need some help. Idling issue.

Postby timek1m » Mon Nov 16, 2015 11:50 pm

Hi folks.

So I had a blown turbo manifold gasket. Replaced it, then my car wouldn't hold idle. So I thought it was a vac leak. Couldn't find it. Took it to a shop, they said it is the maf sensor, I replaced the maf sensor with a new one. Still no fix, idles at 1500rpm and dies in 30 sec.

I tried resetting ecu,by disconnecting battery.

Any ideas on where I should be looking? Thanks
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Re: Need some help. Idling issue.

Postby zaluss » Tue Nov 17, 2015 1:49 am

I would start with the idle air control (IAC) which is connected to the base of the throttle body. It can (and will) overtime get clogged with carbon and fail to operate. I'm not 100% on how it works with gen2 and the exact impact on cold idle.
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Re: Need some help. Idling issue.

Postby timek1m » Tue Nov 17, 2015 11:52 pm

Thanks. I'll give that a shot. What would be appropriate to clean it? Probably can't use the maf sensor cleaner?
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Re: Need some help. Idling issue.

Postby Killtodie » Wed Nov 18, 2015 4:46 pm

I had the same issue, wires became corroded, and disconnected from the pigtail that plugs into the IAC. Carefully remove it, clean both ends with Electric Cleaner, and make sure the wires are still attached.
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Re: Need some help. Idling issue.

Postby timek1m » Fri Nov 27, 2015 10:28 pm

Thanks for the response.

I tried cleaning the iac. No luck. But I will check the connections for corrosions. Hopefully that's it.

Haven't had my car running for a week. It's killing me.

Btw. I don't know if I mentioned check engine light for maf 1 to 4 is on.

Thanks again
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Re: Need some help. Idling issue.

Postby underscore » Fri Nov 27, 2015 11:15 pm

If the CEL is on for that MAF I'd start there. How did you check for vac leaks? I'd imagine a bad one could cause the ECU to think something is up with the MAF but I'm not sure how those things work.
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