CMF Junior Member
Join Date: Mar 2011
Location: Fort Wainwright, Alaska
Re: 4cyl Rough Idle - Brakes Make Engine Stall????
Well living in the state of Alaska I can tell you first hand how cold starts affect the idle. Like MRC my 2012 2.4 LTZ sounds like air puffing. It also idles a lot higher the colder it is. The dealer today told me to let the car warm up at least 10-15 minutes. Depending how the temperature is.
But in relation to the issue at hand, have you asked your dealer what is causing the rough idle? I am in the military and we have certain military trucks we use, and I had the same symptoms ironically that you have in your 09. It turned out to be a couple of internal engine parts, and we could not fix it until we took it in for services and pulled the engine. Something may be loose.
2012 Malibu LTZ (LZ1) Born December 2011
Black Granite (Yup its a 2.4L)
Received: April 28 2012 (after one long year in Afghanistan)
Mods: JL Stealth Box, 8000k HID for Lows and 6000K Fogs, 20% Tinted Windows
Upcoming Mods: Plasti Dipped Wheels and Chevy Emblem
Old Car: 2009 Chevy Malibu LT Aka: Highway Trooper 67,000 Miles