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Check engine light & no codes in OBD 700 1990

Thanks Chris, that was my problem. I had only accessed socket 6 (ignition) and had failed to check socket 2 (fuel). Found the codes 232 (fuel trim) and 212 (O2 sensor). Suspect the root problem might be the FPR (have never replaced). Cleared the codes,started her up and now no check engine light. So I'll run it for awile and see what happens.






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