help!!!!!
Thread Starter
Registered User
Joined: Jul 2003
Posts: 222
From: tampa, fl
help!!!!!
"At wide open throttle my right bank gradually from the time I hit it went
lean, from 900Mv to 4mv in whatever gear. The next gear the right bank
stayed low in Mv but the left was relatively OK(getting leaner but not
nearly as bad as the bank2). I think the Fuel pump may be the culprit. but
why one bank and not the other? The interesting thing is @ WOT the 02's are
running in an open loop mode, but yet they are correcting for a lean bank @
WOT. The bank that the 02's drop out from the pulse width is increased by
about 3ms over the other bank.
My part throttle fuel curve is good, the problem just happens at wide open
throttle. The 02's are moving all around dunring reg driveability but they
only drop out @ WOT. I have tried adjusting the fuel and timing, but still
no change. i have changed my injectors, checked for exhaust leaks, have new
o2's that have 1500 miles on them. No difference. "
lean, from 900Mv to 4mv in whatever gear. The next gear the right bank
stayed low in Mv but the left was relatively OK(getting leaner but not
nearly as bad as the bank2). I think the Fuel pump may be the culprit. but
why one bank and not the other? The interesting thing is @ WOT the 02's are
running in an open loop mode, but yet they are correcting for a lean bank @
WOT. The bank that the 02's drop out from the pulse width is increased by
about 3ms over the other bank.
My part throttle fuel curve is good, the problem just happens at wide open
throttle. The 02's are moving all around dunring reg driveability but they
only drop out @ WOT. I have tried adjusting the fuel and timing, but still
no change. i have changed my injectors, checked for exhaust leaks, have new
o2's that have 1500 miles on them. No difference. "
Registered User
Joined: Dec 1969
Posts: 27,727
From: Little Rock, AR
WOT fuel delivery is based on some other cells for reference. If those are messed up, then the WOT delivery will be too. At least that is the way I think I understand it. 
I have not dealt with it enough to be an expert. Injuneer has some stuff on his page that might help or some other experts can chime in.
I usually skip over threads that don't have anything meaningful in the subject line. Too many threads to look at and keep them separate without some way to distinguish one from another.
I have not dealt with it enough to be an expert. Injuneer has some stuff on his page that might help or some other experts can chime in.I usually skip over threads that don't have anything meaningful in the subject line. Too many threads to look at and keep them separate without some way to distinguish one from another.