Random high idle, code 42
87 Turbocoupe gives me code 42, O2 sensor has fluctuating voltage like it should. The idle will randomly stay high, 1500-200rpm. Tried multiple idle solenoids. I replaced O2 this year. EGR vacuum line is disconnected and capped. Code 25 also comes up for knock sensor, I wouldn't think that would matter.
Topic: Random high idle, code 42 (Read 478 times)
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