Need help with a check engine light
Thread Starter
Le Mans Master
Joined: Mar 2004
Posts: 5,562
Likes: 5
From: South East coast Florida
Need help with a check engine light
So all is going well at the track Saturday at E-town when a funny thing happened on my third TT pass. 1st and 2nd no problem, throw third, gear change smmoth, when all of a sudden the check engine light comes on, power drops (almost like I went from 2nd to 5th) and about a second later, light goes out and power returns 
When I returned to the staging lanes, I check for codes and there are't any except 2 HVAC codes, which I didn't write down because I didn't think they were relative.
What do you think, 4th round went without a hitch? Drive home was OK as well? I guess the question is, what can trun on the CE light, without throwing a PCM code? Info on car are in my sig.
Thanks for your time
Ed
When I returned to the staging lanes, I check for codes and there are't any except 2 HVAC codes, which I didn't write down because I didn't think they were relative.
What do you think, 4th round went without a hitch? Drive home was OK as well? I guess the question is, what can trun on the CE light, without throwing a PCM code? Info on car are in my sig.
Thanks for your time
Ed
Pro
Joined: Jun 2005
Posts: 593
Likes: 1
Might of had misfire and this would not have tripped the CES since it takes multi misfires to trip a P0300
Also though being it was tuned they could have turned OFF some error codes or tuned out functions like misfire or knock and you would never know what happened since the codes are commanded never to trip on.
You need to do a indepth PCM scanner recording and see what may be out of line
Also though being it was tuned they could have turned OFF some error codes or tuned out functions like misfire or knock and you would never know what happened since the codes are commanded never to trip on.
You need to do a indepth PCM scanner recording and see what may be out of line
