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obd 1 e36 random cel & etest fail
hey guys I know this is verry brief and hard to pin point but i wondered if anyone else ever had this issue!? i have a 1992 318is with 288xxxkm on it overall seems to be a fairly well maintained car and i have put a fair bit of money into it since purchasing it. I recently have been having my check engine light randomly flash or stay on for max of 2 min, very rarely my car will also beep 3 times while driving with the cel light on. I recently failed my etest for nox only with a reading of 740.During highway driving spending 1hr+ at 4krpm i have never had the cel light turn on! only city driving after about 2400rpm
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