04 GMC Envoy misfire with no check engine light

Asked by Apr 05, 2015 at 04:17 PM about the 2004 GMC Envoy 4 Dr SLE SUV

Question type: Maintenance & Repair

I have a 2004 GMC Envoy. I recently replaced the spark plugs with AC Delco iridium spark plugs. I can feel a misfire with engine at idle and while driving, but there is no check engine light. How do I determine what is causing the misfire with no check engine light

2 Answers

10,100

have the computer scanned anyway. sometimes a code is stored. also, it is possible your light itself doesn't work. happens.

50

It can be a million things. Check fuel pressure and spark. If it was a misfire you would would have P0300 codes

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