Question about 1998 Subaru Legacy

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Miss fire in cylinder #1, 1998 subaru legacy outback

Have DTC Code PO101, a miss fire in cylinder #1. I have inspected the spark plugs but all are in good condition. A tune up was done approx. 30k miles ago. The fuel filter was slightly restricted but just barely. The wires ohmed out within spec's. Originally, had a PO103 code along with a PO325 knock sensor code. Resistance was out out range and replaced the sensor. The resistance on the coil reads good but I haven't seen it on the scope. I don't have a scope to see and read the ignition patterns. The resistance at the injector is good, 11.5 ohms.
problems occurs after the car warms up and intermittently. what am I missing?

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  • mimissa Dec 20, 2008

    Hi, I have the exact same problem. The exact same codes comes on, we changed the spark plugs it stopped for a month and it started to do it again. Have you found the problem yet?

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Fuel injectors getting ground from pcm?

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