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bad idles

MGRead

MGRead

New member
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.
 


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
 
it will only do it every so often. like 1 or 2 a day. I drover about 12mile round trip to work in stop and go.
 


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