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  #11  
Old 02-22-2016, 06:15 PM
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They should be able to test the fuel pump pretty easily. Put a pressure gauge on it and see if it's pumping up to spec or not.

Don't know what the symptoms of a bad pcv valve would be aside from some moisture buildup in the crankcase... Don't imagine it would cause drivability issues but I don't know for sure.

O2 sensor shouldn't affect cold start idle I don't think. Could contribute to your fuel consumption issue though. But the colder weather can be enough to so that on its own.
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  #12  
Old 05-17-2016, 06:05 PM
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They replaced a bad motor mount, PCV valve, and 'cleaned' the MAF.
It is smoother, but the idle still drops to 500 on my onboard tach at stoplights.
I shift into neutral, and idle goes up to about 650.
Should there be that much difference in RPMs between D and N?
I wonder if they can just go in the computer and raise the curb idle....
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