motorcar

IAC 2ZZ 2003

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My Matrix XRS might need a new IAC valve. The valve is stuck open and warm idle is 2krpm. There are 3 pins on the plug. I think the pin 1 is ground, pin 2 is 12V, and pin 3 is a 7-8V pulse. The device seems to be a mystery with a wide range of prices. How can  test a replacemnet? wow- thank you!!

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Did you try cleaning the iacv? 

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