Hey folks, been at it for a while and I'm pretty familiar with the platform.
Picked up a x90 with a fuel pump issue and put in a new pump? and filter and got it running. 123000 on the clock 4x4 auto.
Had a few code knocked them out.
The problem I'm having is that it won't stay in closed loop.
I have read the fixkick site quite a bit due to the plentiful info. Thanks,
I have everything checked out and I have this problem.
At idle The primary o2 sensor reads .09vdc and won't toggle as it should. ( we later lean the 0.09v is a typo, and is 0.9v ( that is 1v = stuck high full rich, 0v = lean 1v = rich)
Then the short term fuel trim (long is better) tries to correct until it goes of the scale and shuts down and goes into open loop due to insufficient temperature? (who's temperature, air, coolant or 02 heater?)
No engine codes DTCs, I've checked all sensors related and it's all good , checked fuel pressure 40psi and 50psi(wrong) with the vacuum of the regulator.
I can trick it buy creating a vacuum leek by pulling off the evap nipple, to plenum, and get the o2 to toggle and stay in closed loop, but it's idling high (how high?) at that point with a vacuum leak.
I'm leaning toward a bad ECU (it's not that as I learned) as I have ran out of tests. (no , there are many other tests)
I can list a bunch of things I have done and tested. Try me. ( why leave out facts and tests?)
Thanks again I really appreciate all this knowledge in info your offering..
tech, edited above. accuracy.
Picked up a x90 with a fuel pump issue and put in a new pump? and filter and got it running. 123000 on the clock 4x4 auto.
Had a few code knocked them out.
The problem I'm having is that it won't stay in closed loop.
I have read the fixkick site quite a bit due to the plentiful info. Thanks,
I have everything checked out and I have this problem.
At idle The primary o2 sensor reads .09vdc and won't toggle as it should. ( we later lean the 0.09v is a typo, and is 0.9v ( that is 1v = stuck high full rich, 0v = lean 1v = rich)
Then the short term fuel trim (long is better) tries to correct until it goes of the scale and shuts down and goes into open loop due to insufficient temperature? (who's temperature, air, coolant or 02 heater?)
No engine codes DTCs, I've checked all sensors related and it's all good , checked fuel pressure 40psi and 50psi(wrong) with the vacuum of the regulator.
I can trick it buy creating a vacuum leek by pulling off the evap nipple, to plenum, and get the o2 to toggle and stay in closed loop, but it's idling high (how high?) at that point with a vacuum leak.
I'm leaning toward a bad ECU (it's not that as I learned) as I have ran out of tests. (no , there are many other tests)
I can list a bunch of things I have done and tested. Try me. ( why leave out facts and tests?)
Thanks again I really appreciate all this knowledge in info your offering..
tech, edited above. accuracy.