jimnina

My 94 has an engine miss that I can't seem to pin down.
I have ran a couple data logger sessions and none of them have shown any DTC errors. The O2 sensors under acceleration seem to fluctuate between high and low from bank to bank with no consistency. I was hoping that a low O2 reading would give me which bank the mis-firing cylinder was on. None of the readings ever get into the RED, only the Lterm, Sterm, and Knock count ever gets into the yellow.

DanielRicany

Pull The Injector Connectors One By One And Do A Power Balance Test.

65Z01

If it does it at idle, clip a timing light in turn onto each spark plug wire to see if you can pinpoint the cylinder or at least eliminate ignition.

kimmer

jimnina

Thanks for the suggestions. I won't be able to run any of the tests until the weekend. I'll post an update afterwards.