This topic contains 1 reply, has 1 voice, and was last updated by 
Ron 1 week, 6 days ago.
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Topic
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My idle surges from 1000 to 2500 constantly until I unplug my IAC valve. I have cleaned my egr ports and tried a new IAC valve but I still have the same problem? Something is telling the valve to stay wide open when it is plugged in??? Could a temperature sensor be causing it?
Thanks,
Ron
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I guess nobody reads this forum anymore? The only thing I can think is that I put a new aftermarket IACV on and it is also faulty?? I find it hard to buy a $300 part when that might not be the problem??!! I also replaced the IAT sensor, the temperature sensor and put a different throttle body on, I have bled the cooling system several times and it STILL SURGES!! Sometimes I can hold the rpm’s at about 4000 for several seconds and then it will idle down but only until I give it more throttle then it starts surging again???
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