hanging idle HELP
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,447
Likes: 1
From: Katy TX
hanging idle HELP
My has been running fine after I replaced the MAP sensor and all of a sudden today on the way home from work my idle started to hang causing 230* coolant temps with a/c off. When I come to deccelerate or coast in neutral, my idles jumps to 2k rpms and once I come to a stop, it drops to 1k rpms and sits there. My normal idle is 700rpms. While at idle, because of the hanging idle oil temps heat up and drive the coolant temp up. Once I'm rolling with the car in gear the coolant temps drop. I did drive in the rain and I do have a vararam, but could my maf have gotten wet?
Burning Brakes
Joined: Mar 2008
Posts: 983
Likes: 36
From: Middle Of Kali CA
My has been running fine after I replaced the MAP sensor and all of a sudden today on the way home from work my idle started to hang causing 230* coolant temps with a/c off. When I come to deccelerate or coast in neutral, my idles jumps to 2k rpms and once I come to a stop, it drops to 1k rpms and sits there. My normal idle is 700rpms. While at idle, because of the hanging idle oil temps heat up and drive the coolant temp up. Once I'm rolling with the car in gear the coolant temps drop. I did drive in the rain and I do have a vararam, but could my maf have gotten wet?
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,447
Likes: 1
From: Katy TX
Update: Hanging Idle issue fixed. I sprayed electrical cleaner on the MAF and my oil temps went down from 234* to 200* and coolant temps dropped from 230* to 180*, no more hanging idle.
I need to contact England Green because I've made some small changes over the 5yrs since I've had my last tune. It might be time for a touchup tune.
I need to contact England Green because I've made some small changes over the 5yrs since I've had my last tune. It might be time for a touchup tune.
Last edited by All_Motor_C5LS6; Jul 7, 2011 at 11:01 AM.
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
I do know there's something in the base tune that doesn't allow the idle to drop to it's set lower level until the car comes to a complete stop. ( i think it's a smog thing) Sometimes, after mods, this issue becomes exaggerated, and the idle goes up to 2k! It's tunable, but tricky.
