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View Full Version : Chevrolet Colorado Check engine light?


tracy
11-12-2009, 06:18 PM
I have got a 2006 Chevy Colorado with about 86,000 Miles on it. In the past few months the check engine light has been going on and off. I have hooked a scanner up to it, and each time it tells me that i have a random cylinder misfire (only its not random, its in cyl. 3 and only when idling)
I have changed the spark plug in cylinder 3, twice. Nothing. I have switched the cylinder coil pack from one to three, but it still misfires in 3. I have put injector cleaner in with my gas when i get fuel (which i have been putting mid-grade gas in, figuring maybe it was bad regular gasoline i was putting in) but nothing has worked. I even recently changed my coil pack in 3 to a brand new one.. nothing. I am really getting frustrated with this, and of course, my warranty has just expired. (typically).
I really need help with his. But i cannot afford to take it straight to GM. I think it could possibly be maybe a bad injector??? i don't know.