extreme leaning out in open loop... need ideas
#1
Senior Member
Thread Starter
extreme leaning out in open loop... need ideas
ok guys
i had bean beating my head against a wall for a week
the car runs great while its cold. once it gets to running temp, it leans way out
i have a afr gauge running off of the coputer innput from the o2 and it will idle fine but the moment you get over 1400 rpm it leans out and falls on its face(only after it warms up)
help me lol
i had bean beating my head against a wall for a week
the car runs great while its cold. once it gets to running temp, it leans way out
i have a afr gauge running off of the coputer innput from the o2 and it will idle fine but the moment you get over 1400 rpm it leans out and falls on its face(only after it warms up)
help me lol
#4
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Car: 1988 Camaro Sport Coupe
Engine: The All-Powerful 2.8l!! :P
Re: extreme leaning out in open loop... need ideas
Stock 3.1 Multec injectors? I'm running them in my car and funny things definitely happen when the car's warm, I'll sometimes get a volt drop, and some engine noise. I think my issue is they're causing a rich condition tho, not lean, but still something worth checking out
#5
Senior Member
Thread Starter
Re: extreme leaning out in open loop... need ideas
yea i pulled the injectors and they ohm out to 11.5 to 11,9
not leaking but possibley cloged
put them back in and changed temp sender tps iac cap rotor wires and ignition mod
it needed a tunr up anyway
runs and idles nicely now, though very long crank befor starting and the moment i hit the throttle its leaning out
im thinking its the injectors as well .. there the oem injectors by the way
not leaking but possibley cloged
put them back in and changed temp sender tps iac cap rotor wires and ignition mod
it needed a tunr up anyway
runs and idles nicely now, though very long crank befor starting and the moment i hit the throttle its leaning out
im thinking its the injectors as well .. there the oem injectors by the way
#6
Supreme Member
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Re: extreme leaning out in open loop... need ideas
I have a question that maybe Tuned Performance can answer ?
My question is this ;
Could the fact that he has a AFR gauge hooked up to the same place on the ECM that the 02 connects to be causing the ECM to see a faulty 02 reading from the gauge "loading" the 02's output signal down lower than the ECM expects to be seeing ? I only as because I know the 02 deals with a pretty tiny voltage swing through it's operating range and I have no real clue as to whether such loading would be relevant to it or not ....
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#8
Senior Member
Thread Starter
Re: extreme leaning out in open loop... need ideas
I have a question that maybe Tuned Performance can answer ?
My question is this ;
Could the fact that he has a AFR gauge hooked up to the same place on the ECM that the 02 connects to be causing the ECM to see a faulty 02 reading from the gauge "loading" the 02's output signal down lower than the ECM expects to be seeing ? I only as because I know the 02 deals with a pretty tiny voltage swing through it's operating range and I have no real clue as to whether such loading would be relevant to it or not ....
My question is this ;
Could the fact that he has a AFR gauge hooked up to the same place on the ECM that the 02 connects to be causing the ECM to see a faulty 02 reading from the gauge "loading" the 02's output signal down lower than the ECM expects to be seeing ? I only as because I know the 02 deals with a pretty tiny voltage swing through it's operating range and I have no real clue as to whether such loading would be relevant to it or not ....
i have been running the afr gauge off of that signal forabout 6 years without an issue so i doubt thats it
#9
Senior Member
Thread Starter
Re: extreme leaning out in open loop... need ideas
the car is running pacesetter headers with a custom intake as well as the prom has bean sent out and re programmed to work with the headers and intake ..
i have been running this set up on the oem style injectors for about 7 years or so
#10
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Re: extreme leaning out in open loop... need ideas
You might want to ask the experts southbay08 for injector options.
https://www.southbayfuelinjectors.co...85-1992_1.html
https://www.southbayfuelinjectors.co...85-1992_1.html
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