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Found answer to problem. 700

posted by  Swami Ji on  Wed Jul 3 10:49 CST 2019
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Well, looks like the original ECU is letting the engine rotation signal to be dropped. Had another No Start the other day. Install my modified Main relay. ( turns the fuel pump on) eliminates safety fuel cut-of in an accident, but gets me running again.
I have two more good ECU and new relay. Unless I have a wire short, I think it's just the 1989 ECU taking a crap. Only my appreciation of the Volvo's keeps me going. Time to carry an extra ECU and relays, Etc....Kits. So glad the ECU is 1 screw and 2 10mm bolts. Thank You Volvo.





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