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3 liter engine idle surges between 1900 then drops to 800 rpm

  

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01 accord 3 liter engine idle surges between 1900 then drops to 800 rpm

the car sat for 4 months then the idle started to surge 

I have removed and clean the Idle air control valve 

The car has NO check engine light on 

Do you have any other ideas  

thank you in advance


2 Answers
2

Any vacuum leaks? Or any signs of rodent bites on the vacuum hoses?


1

Does the car have any leaks? Clean the MAF sensor and throttle body with spray cleaner (How to make your car run better with spray cleaner).


Thanks for the reply
I had the throttle body off and cleaned all the inside of the throttle body
I didn’t notice a MAF sensor but I will look again


I received and installed the new IAC valve
The rpm on the motor is at 800 and the motor purrs like a kitten


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