won't stop running rich
#11
Re: won't stop running rich
Originally Posted by omniscient
Yeah it seems like Bosch widebands like to go rich as they start to die.
My widebands typically become lazy, or if exposed to racegas they won't read past 11.5-12:1 AFR no matter how much fuel is thrown at them. I have had the full-rich syndrome, but it's a lot rarer.
Originally Posted by ratcityrex
But I think that you could still lean it out if it had a bad coolent temp sensor.
Originally Posted by Lowerit
At the GRM challenge we had what we thought was a injector stuck open
Check to make sure IACV/purge solenoid/IAT plugs aren't mixed up. I think you have an 88-91 chassis ? so the purge is located on the firewall harness and not a problem, but you might have a spare DPI plug or the like that got tossed into the mix.
Check the IAT to make sure the tip isn't melted.
Check the ECU board and make sure there are no burned components.
#12
Re: won't stop running rich
the car was running good, then like flicking a switch it went to barely running and tons of black smoke out of the exhaust, while running. we didint change anything. if i leaned insanely, it would finally lean out, but then die. i couldnt get it in a place where it would run without a ---- ton of smoke and a bunch of skinny pedal.
the issue here has nothing to do with what the wideband says. the car wouldnt run. any issues with the wideband are useless at this point
John, did you say you put a stock P06 in there? like no chip? if so that will cause it to run exactly the same with those big injectors. try to scrounge up some 240's and put in there. i bet it will run smooth
the issue here has nothing to do with what the wideband says. the car wouldnt run. any issues with the wideband are useless at this point
John, did you say you put a stock P06 in there? like no chip? if so that will cause it to run exactly the same with those big injectors. try to scrounge up some 240's and put in there. i bet it will run smooth
#14
Re: won't stop running rich
it was running good then "click" running like ---- and never got good again. If it sits for a few min. it will start like normal, but after second or two it will run like *** again. He had DSM 450's. I usually hear of those sticking closed, not open.
I could make it idle by setting the iacv all the way open with Crome. It was at like 1500 rpm and a bunch of black smoke, but it ran.
I could make it idle by setting the iacv all the way open with Crome. It was at like 1500 rpm and a bunch of black smoke, but it ran.
#15
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Re: won't stop running rich
did some investigation on the weekend..
I think everything is fine, the problem lies in a 89 with a 1991 dash harness spliced in..
Turn the key , the fan cycles for a sec , turns off , then runs constant....
something is fucked...I am gonna pull the dash harness from an 89 this weekend and swap it out...
we changed it before the challenge when we had electrical issues... fixing the lighter revealed a mess of wiring under the dash with marettes and speaker wire spliced in...
I think everything is fine, the problem lies in a 89 with a 1991 dash harness spliced in..
Turn the key , the fan cycles for a sec , turns off , then runs constant....
something is fucked...I am gonna pull the dash harness from an 89 this weekend and swap it out...
we changed it before the challenge when we had electrical issues... fixing the lighter revealed a mess of wiring under the dash with marettes and speaker wire spliced in...
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