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Showing content with the highest reputation on 08/18/2022 in all areas
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In my experience, a persistent EO42 will put the car in default spark mode and the engine is running on 4 cylinders. Limp mode is drivable, but rough. EO42 is indicating a communication problem between ICM and ECM. In my case the ICM itself was not the problem. Replacing the 14 pin connector and splicing in a new length of wires ultimately solved the issue. Process of elimination, start with the ICM and work your way back was my method.2 points
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Take the ignition module off your 1989 and install it on the 1990 and take it for a ride. Classic ignition module/coil pack. Second thought would be a failing crank sensor..2 points
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You won't regret it. It actually looks better then the picture [not that 2seater takes a bad picture].1 point