Warm Up Probelms
Thread Starter
Joined: Oct 2007
Posts: 446
Likes: 1
From: Oakland, California
Warm Up Probelms Guys, I'm in need of help once again. It's an '01 Z28 with MS4 cam, stage 1 LS6 heads, and headers, and is already tuned. The problem just started a couple of days ago and am not sure if I should be worried. In the morning when I go start the car it doesn't want to stay on and only stays on when I keep my foot on the gas till it warms up a bit, is this normal or is there a problem? It use to stay on without keeping my foot on the gas, but now it doesn't want to stay on.
Do you have a speed density tune or a MAF tune? Sounds like maybe your A/F at open loop is a little off and you need to have your cold start looked at. Any other tune problems?
I am also presuming everything else looks good, oil pressure, battery voltage, etc. If that is the case you may get more sage advise in the PCM Diagnostics & Tuning forum.
I am also presuming everything else looks good, oil pressure, battery voltage, etc. If that is the case you may get more sage advise in the PCM Diagnostics & Tuning forum.
Do you have a speed density tune or a MAF tune? Sounds like maybe your A/F at open loop is a little off and you need to have your cold start looked at. Any other tune problems?
I am also presuming everything else looks good, oil pressure, battery voltage, etc. If that is the case you may get more sage advise in the PCM Diagnostics & Tuning forum.
I am also presuming everything else looks good, oil pressure, battery voltage, etc. If that is the case you may get more sage advise in the PCM Diagnostics & Tuning forum.
Vince
Thread Starter
Joined: Oct 2007
Posts: 446
Likes: 1
From: Oakland, California
OK. there aren't any other problems. This cold start problem just started a couple of days ago. I got the car dyno tuned. I'm going to try posting it in the PCM diagnostic section. Thanks guys.
