2004 grand prix gt2 151,000 at a stop light she jump up and down from 400 rpm to 900 rpm. I have a video but can't upload it. any help.
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Please check for vacuum leaks.
When was the last tune up of spark plugs, TB cleaning, wires, and maf cleaning?
mine does the same thing but only in park and nuetral and did a smoke test and it passed new idle controll sensor and new MAF sensor new temp sensor cant figure out what it is either
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