A/F metering on a Wide-Band O2 sensor
09-14-2004, 06:58 PM
#12
Junior Member
Join Date: May 2002
Posts: 740
Likes: 0
Received 0 Likes
on
0 Posts
Wouldn't more fuel burned also lead to more oxygen consumed?
In this situation I assume that the intake valve is closed, and the mixture is being compressed. The amount of air and fuel in the cylinder is fixed. What in advancing the timing causes a change in the ratio of burned fuel to consumed oxygen.
09-14-2004, 07:06 PM
#14
New Member
Join Date: Dec 2003
Posts: 103
Likes: 0
Received 0 Likes
on
0 Posts
The only problem is his engine wasn't misfiring...
He would have thrown a code and/or it would have been very noticeable. You explanation is what you are guessing was happening. But guessing will not explain it if that wasn't the case. Since it wasn't the case and his car wasn't misfiring, then one can assume, from your explanation, that the GIAC chip was indeed running rich.
09-14-2004, 07:11 PM
#16
New Member
Join Date: Dec 2003
Posts: 103
Likes: 0
Received 0 Likes
on
0 Posts
Read my post. If it was misfiring it would throw a code...
plus the engine make behaves differently when misfiring. If you don't know how an engine acts when misfiring, ask. I am sure both Drew and Jeff know what a misfire is like and they would have talked about it.