High fuel trims and misfire
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On The Tree
Joined: Feb 2020
Posts: 180
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High fuel trims and misfire Sorting the bugs out on my lm7 swapped car that’s sat for almost a year. Got it out and it started hard, ran very rough and backfired constantly. Found the PCV hose was split, major vacuum leak. Found a few wires that were bad, the terminal broke at the coil pack on them.
The car still idles rough, take it out and the stft on bank 1 it going up to 55 at times, and the long term is staying at 25. Bank 2 both are at zero most of the time. Fuel pressure is good, I have spark at each coil. Can the 02 output voltages tell me anything? I haven’t tried flopping the 02s yet, that’s my next step. Just wondering if there is anything else I should check also.
The car still idles rough, take it out and the stft on bank 1 it going up to 55 at times, and the long term is staying at 25. Bank 2 both are at zero most of the time. Fuel pressure is good, I have spark at each coil. Can the 02 output voltages tell me anything? I haven’t tried flopping the 02s yet, that’s my next step. Just wondering if there is anything else I should check also.
