View Single Post
Old 03-13-2015, 12:47 AM   #3 (permalink)
ksa8907
Master EcoModder
 
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
Thanks: 206
Thanked 420 Times in 302 Posts
I cant tell you if this is what the problem is, but a lot of times cars will idle rough like that when the throttle body and idle air controller are gunked up.

Air controller gets full of carbon and can't being the idle down to take stress off the transmission.
__________________




  Reply With Quote
The Following User Says Thank You to ksa8907 For This Useful Post:
The Other Andy (03-13-2015)