IACV allows too much air to bypass! i'm stumped

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Dec 10, 2008 | 05:21 PM

#41

chillin014

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From: houston tx

im using the 3.0 one. remote mounted. I still need to adjust it, but it works fine.

Jun 16, 2011 | 06:53 PM

#42

shadyonedeath

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From: Los Angeles, CA

Quote:

Originally Posted by chillin014

I thought I'd update this thread for anyone who came across it in the future. I bought a 5 speed ECU and the problem is now gone. No more air flowing through the iacv under 2400 RPM and etc.

thanks everyone

I know this is old but your still around...

How do us A/T transmission guys with A/T ECU's fix this problem?

Jun 17, 2011 | 10:51 AM

#43

chillin014

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From: houston tx

maybe you just have a vacuum leak. My issue was due to running the wrong ECU.

Jun 17, 2011 | 01:23 PM

#44

shadyonedeath

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Nah, I plugged up my Throttle body using KRRZ350's method (3" PVC expandable plug on the according piece) and blew air into the manifold via one of the vacuum lines, it held pressure and even blew it back out at me. I even sucked air out (yes sacrificing my lungs for this car

) and held the end of the hose with my thumb and it held vacuum. Keep in mind, the IACV required to be plugged too in order to hold vacuum.

Which leads me to believe the IACV is bad but measurements say otherwise. Resistance is in spec. 45ohms all around/12v from ECU. Tps is @ a perfect 545 ohms closed, 3500~ @ WOT, and measures linear all across.