Ok I have been having the same problem as a lot of other people, rough start with cold engine, rpm bounce in idle, etc. Anyway I cleaned the TB, set it and it's still the same. So today in autos I ran a diagnostic test on it and it came up as I need a new knock sensor. Althought my teacher told me it's probably my idle coolant temp. or something like that, he told me at the end of class when it was rush so I don't remember what it was excatly called but my question is how much is a knock sensor usually cost and what is this idle coolant temp. and how do I fix it. Thanks

Mike

 

Sorry about repeating the forum, didn't see the other one on there.