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Old thread, new problem. Car was running rough and even died a few times. Put a scanner on it and it said Mass Air Flow Sensor. So I replaced it. Now it runs down the road ok, but idles rough. Doesn't die but will act like it's going to and the idle will fluctuate from 600 to 1100. Scanner just says idle rpm unusually high detected. But doesn't say why. Any ideas?

Remove and clean the throttle body thoroughly, paying special attention to the throttle blade. And make sure you have no leaks in vacuum hoses.

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