dan (209.181.70.240) - Thu Mar 19 19:28:38 2009

when the volvo is started it runs but rough as hell, found that onlt cyl 1 and 4 are actually firing, when i removed cyl 2-3 spark and injector connections car still runs like , but dosnt change when reconnected, car is getting spark and all injectors are working, new coil, and still nothing. found wheresomone had cut into the original wiring harness for the injectors and retrofitted thier own, upon closer examination it was a freaking mess, re-did harness but still have the same problem, how do i read codes if any from a 1990 volvo?

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