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Central IL | As for the rough idle add some injector cleaner to the tank. Might need to think about spark plugs as they are a 100k replacement item and tend to be forgotten. Another would be to clean the intake with some intake spray cleaner in a can. Check to be sure all your vac hoses are on and tight.
Serpentine belt could just be bad but check for bad bearings in an idler or device on the belt. Could be worn pulleys too. | |
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2009 Impala Oil In Coolant
