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brandon519 · 10-04-2017, 07:50 AM

Hello everyone.
My single cam KA has an issue where it will idle fine until it hits an exact point on the temp gauge, just past the middle of the gauge. After the needle hits this point, there is a sucking sound coming from the intake manifold, and the AFR goes to 17-18. When the happens, the car lopes and doesn't idle smooth (as I'd expect with this AFR). I have tried looking for vacuum leaks in the engine bay and have replaced clamps and resealed the IACV. I also blocked off the AAC valve thing on the side of the intake manifold. I can't figure out this issue, and hope that one of you guys have experienced the same problem or what it could be.
Thanks

10-04-2017, 07:50 AM	#1
brandon519 Join Date: Jan 2016 Location: Chicago IL Posts: 37 Trader Rating: (0)	Lean Idle After Warm Up Hello everyone. My single cam KA has an issue where it will idle fine until it hits an exact point on the temp gauge, just past the middle of the gauge. After the needle hits this point, there is a sucking sound coming from the intake manifold, and the AFR goes to 17-18. When the happens, the car lopes and doesn't idle smooth (as I'd expect with this AFR). I have tried looking for vacuum leaks in the engine bay and have replaced clamps and resealed the IACV. I also blocked off the AAC valve thing on the side of the intake manifold. I can't figure out this issue, and hope that one of you guys have experienced the same problem or what it could be. Thanks