cold idle
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,430
Likes: 3,981
From: Cape Coral, Florida
Had this been happening after the car had been tuned or just since it’s been cold out ??…either way I’d bring the car back to your tuner because he may have screwed something up…maybe an ECT sensor since you have to warm it up…is the MIL illuminated ??
Race Director
Joined: Oct 2004
Posts: 12,859
Likes: 4,658
Burning Brakes
Joined: Feb 2019
Posts: 1,028
Likes: 377
From: SW Ohio
You need to get it back to your tuner - it may be as simple as adding a bit of air to your base idle air flow table in the lower ECT ranges, or it could be a combination of a bunch of settings being out of whack. But, more than likely it's just needing that table adjusted. Did your tuner start with a cold motor by chance or just tune it right after you brought it to him like most do? A dude made a great setup in HPTuners, commonly referred to as the RussK file, that will log everything for your tuner and give you a pretty strong initial RAF table if he has access to your car from a cold start.
