My m42 is running strong but I am baffled concerning the main problem with the engine. Currently the car runs and drives pretty good with this arrangement but does have a major problem.
pin 24 off DME = cylinder 1
pin 25 off DME = cylinder 3
pin 51 off DME = cylinder 2
pin 52 off DME = cylinder 4
I have checked the pinouts of the DME to confirm this 4+ times now and Im baffled because according to every wiring diagram online...
pin 24 off DME = cylinder 3
pin 25 off DME = cylinder 1
pin 51 off DME = cylinder 4
pin 52 off DME = cylinder 2
the car WILL NOT START with the plugs hooked up this way. no way in hell. its very weird. will crank endlessly without a sputter or anything.
so mine are mixed up yet the car pulls pretty strong. it coughs and sputters/misses like crazy high in the revband at WOT around 5500 sometimes 6000. almost seems like fuel related but the car has s52 pink top injectors (flow the same as stock) that have been rebuilt and I have tested each one's spray pattern on car. fuel pressure Ive driven around with a gauge and the fuel pressure does not change when the miss occurs.
I am running an unknown condition AFM off a junkyard e36 m42 (carries same part # in realoem as e30 m42 however the AFM has a different bosch number on it). this could be the cause of the issue, but I have tried 3 afms all together (2 junkyard e36 and one questionable e30 one) and issue is always there.
brand new spark plugs and ignition wires, both NGK. coil packs all test good and are newer bosch ones. new BMW OE crank sensor and facet brand cam sensor.
I am curious if anybody else could pinout their m42 car for me similar to I have done or have any insight. thank you!
pin 24 off DME = cylinder 1
pin 25 off DME = cylinder 3
pin 51 off DME = cylinder 2
pin 52 off DME = cylinder 4
I have checked the pinouts of the DME to confirm this 4+ times now and Im baffled because according to every wiring diagram online...
pin 24 off DME = cylinder 3
pin 25 off DME = cylinder 1
pin 51 off DME = cylinder 4
pin 52 off DME = cylinder 2
the car WILL NOT START with the plugs hooked up this way. no way in hell. its very weird. will crank endlessly without a sputter or anything.
so mine are mixed up yet the car pulls pretty strong. it coughs and sputters/misses like crazy high in the revband at WOT around 5500 sometimes 6000. almost seems like fuel related but the car has s52 pink top injectors (flow the same as stock) that have been rebuilt and I have tested each one's spray pattern on car. fuel pressure Ive driven around with a gauge and the fuel pressure does not change when the miss occurs.
I am running an unknown condition AFM off a junkyard e36 m42 (carries same part # in realoem as e30 m42 however the AFM has a different bosch number on it). this could be the cause of the issue, but I have tried 3 afms all together (2 junkyard e36 and one questionable e30 one) and issue is always there.
brand new spark plugs and ignition wires, both NGK. coil packs all test good and are newer bosch ones. new BMW OE crank sensor and facet brand cam sensor.
I am curious if anybody else could pinout their m42 car for me similar to I have done or have any insight. thank you!
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