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2001 Pontiac Aztec erratic idle

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Jul 16, 2016, 10:50 AM

Post #1 of 2 (901 views)
2001 Pontiac Aztec erratic idle Sign In

Hi all,

I'm having trouble tracking down a problem with this car. It will start and runs and drive well, but it has a very loud whistle and an erratic idle. It has a strong smell like it's running rich as well. I checked all the vacuum ports and line, they all response dedicated the same so I don't think that's the problem. I'm leaning toward egr valve, due to the sound location, but I'm at a loss. Any and all help would be appreciated.

Thank you

kev2 profile image

Jul 16, 2016, 11:05 AM

Post #2 of 2 (899 views)
Re: 2001 Pontiac Aztec erratic idle Sign In

scan for codes - free at many auto parts stores.... ESPECIALLY if eng light is off.

might try the old school vacuum leak check - BASICALLY carb spray any possible vacuum leak area a change in eng sound or RPM indicates a leak area..

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