Have a 2005 Chevy trailblazer that has a rough idle..I have changed the plugs and cleaned the throttle body don't know what else do to..any suggestions?
5 Answers
I've noticed that it idles rough when in reverse or drive only and it's not constant it's kinda intermittent
CamaroCollector answered 9 years ago
That's because the load increases on the engine and makes the problem more noticeable, I still think you have a small vacuum leak somewhere