Idle Problem when Stopped

[boostz32]

I was hoping someone could give me advice on what you think my problem is. I have a rough idle when I'm stopped at a light or I start the car and it idles it idles in park at around 600 rpms. The pin looks pretty stable at 600 rpms it might move a little to 700 rpms so its not juming around all over the place however It does shake my exhaust an make noise. It seems to happpen every few seconds kinda of irractic. I get this probly 85% of the time not always but it is so annoying. Other than that the car runs good. Let me know what you think.
Thanks Mike

 

[Fred Garvin]

1. it may be your IAC (idle air control valve)

2. you may have valve damage from a loose cam shaft tensioner, which should be be covered under the extended warranty for the cam shaft tensioner..

 

[boostz32]

It has 55,000 miles on it I was going to clean the IAC this weekend. It there any way to rule out the cam tensioner?