• If you currently own, previously owned or want to own an Avalanche, we welcome you to become a member today. Membership is FREE, register now!

engine vibrates at idle

NorthFace35

Full Member
Joined
Feb 28, 2005
Messages
555
Location
Kuwait
just noticed today that my engine starts vibrating at idle, but as soon as i drive the vibration stops. oh BTW it only vibrates at idle when the AC is on, if i turn off the AC the vibration stops.
Any ideas
 
what is RPM?
 
An optomistic (and cheap) approach would be to clean the Air Idle Control valve, and I would do the entire throttle body. My wife's mustang starts to do that very thing you described when its IAC valve gets dirty. Take it out, spray a little carb cleaner through it, wipe it down and install it back. Fixes it every time.

Reference: http://www.chevyavalanchefanclub.com/cafcna/index.php/topic,35190.0.html
 
Back
Top