Mmkay, have an 88 e34 535 (m30 motor), manual tranny. I got it not running, but the guy who had it before me brought it home and it was misfiring, then simply didn't start the next morning.
Issue with it is no spark from the coil.
Original ECU was a 153, replaced it with a 179 because I suspected the ignition coil driver was dodgy as the coil wasn't getting 12v.
Coil tested, was 9kohm primary/secondary. Replaced, new one measures 5.63kohm primary/secondary, 0.01ohm positive/negative. Gives a spark when shorting negative to ground and releasing. Has ~ 11.63v across it when ignition on.
CPS tested, 512 ohms at pins 47 & 48 of the DME plug, CPS unplugged and 4.63v at pin 1. Replaced it anyway, no dice.
No resistance between the ignition wire and it's shield with the DME plugged in and unplugged.
Connecting a multimeter from the ignition coil wire to 12v gets 12v even when ignition is on. Is this correct?
Hit me up if clarification is needed, just blabbered out everything I've done as far as I can remember. ANY help is appreciated, I've given myself a month before I force myself to part her out to pay for another car
