can anyone identify these codes?

[jimberg]

Originally posted by PrplMonster:
I have fuel press set at 60psi with the vac. off.. how could i be lean like that?

It's possible that the O2 sensors are shot. When they go, they start to report less and less voltage which means that they are reporting a lean condition. Running too rich for too long can damage the O2 sensors. The only way this can really happen is if you have a fault that causes your computer to stay in open loop mode.

Does your engine get sufficiently warm? 180 degrees or more? Did you run for a long period of time with a bad critical sensor or something?

Another possibility is that you don't have the orange HEGO ground wire grounded properly. Hopefully it's only the ground wire. I've never actually forgotten about this, so it's only a guess.

Originally posted by PrplMonster:

Also: This only happens when moving foward/reverse, my idle will hover for a second or two around 1300-1500 then return to idle. Remember, this only happens when moving.

This is normal. The computer will open the IAB valve to get the RPMs up when you're rolling to a stop. This is so that your engine doesn't stall if you have to brake hard and don't have time to get to the clutch.



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351W 89 Mustang GT Convertible