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I had the same problem with my car last year, problem only occurred when idling and not while driving. This is why I immediately suspected the IAC. Removing and cleaning the IAC did the trick for me. Hope this will help you.


2000 Mazda 626 with a rough uneven idle issue.. I figured out what it is, and below could could help. Mine never threw a CEL, but when you disconnected the EGR tube from the exhaust header and plugged it. i.e. so there would be no flow from the exhaust manifold to the intake manifold via the EGR valve. My idle significantly improved. I know its not the most ...

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