WOT Problems
Thread Starter
Safety Car
Joined: Sep 2005
Posts: 3,610
Likes: 12
From: Philly Burbs PA
WOT Problems
Ok guys here’s whats going on.
WOT at high RPMs the car seems to misfire (lack of power) and the exhaust makes a lot of babbling. If the car is on WOT for a little when the misfire happens, the check engine light comes on, and I get code p0200 which is "Injector control circuit", but both the CEL and the code will disappear with out me clearing them. When at normal or mid throttle, the car seems fine.
So a lil background, all of this started happening when after I did LG headers with hi flow cats.
I had two codes showing, the above mentioned and a p0300 which, I figured out was 1 bad injector, and when this was going on the misfire sounded alot worse. So I cleared one problem and I am still faced with this problem. I changed the plugs and wires twice.
Any ideas
Thanks in advance
WOT at high RPMs the car seems to misfire (lack of power) and the exhaust makes a lot of babbling. If the car is on WOT for a little when the misfire happens, the check engine light comes on, and I get code p0200 which is "Injector control circuit", but both the CEL and the code will disappear with out me clearing them. When at normal or mid throttle, the car seems fine.
So a lil background, all of this started happening when after I did LG headers with hi flow cats.
I had two codes showing, the above mentioned and a p0300 which, I figured out was 1 bad injector, and when this was going on the misfire sounded alot worse. So I cleared one problem and I am still faced with this problem. I changed the plugs and wires twice.
Any ideas
Thanks in advance
Drifting
Joined: Dec 2005
Posts: 1,720
Likes: 3
From: East Hampton CT
LT's will foul O2's and/or change your LTFT's if you don't have your car retuned.
LTFT's will affect your WOT AFR. If your LTFT's are positive when you dip into PE (WOT) mode, it will dump in a LOT of fuel and cause the issues you're having.
See if you can find someone with a scantool or scanning software so you can datalog and see what's going on.
LTFT's will affect your WOT AFR. If your LTFT's are positive when you dip into PE (WOT) mode, it will dump in a LOT of fuel and cause the issues you're having.
See if you can find someone with a scantool or scanning software so you can datalog and see what's going on.
Thread Starter
Safety Car
Joined: Sep 2005
Posts: 3,610
Likes: 12
From: Philly Burbs PA
Sorry should have mentioned, this started happening after my header install, and I had the car tuned after header install. The problem is so spuratic that the tuner didnt notice any problems.
