Who has actually swapped in an m20 into an m42 318. (help please)

[omar85]

I put an m20b25 from an 87 e30 into my 91 318i. everything is bolted up and it cranks. I have no fuel, and no spark. The #15 connector on the coil pack is for some reason a ground, and i believe it is supposed to be switch power.

I connected the motronic in the glove box but no of the other smaller plugs. None of them mated up, i;m not sure if i need them.

Do I need to change some of the pins on the c101 chassis harness connector?
I need any info you guys can give me. I am totally stumped, and i miss driving my car.

Thanks.

[DaveSmed]

Those smaller plugs are whats screwing you at the moment.

IIRC those smaller plugs are the MPG signal, tach signal, and DME ignition signal for one, A/C input for another, and another one is a mystery. (Something to do with speed input? not needed)

Also, C101 will bone you a bit as well. Your ABS will stop working as well as the unloader relays until you get that straightened out.

It's not a difficult swap, but if you don't know that stuff, (or have someone like me to call up, like my friend who did the same swap did ;) ) you'll be pulling your hair out for sure.

[omar85]

IIRC those smaller plugs are the MPG signal, tach signal, and DME ignition signal for one, A/C input for another, and another one is a mystery. (Something to do with speed input? not needed)

so how do u suggest i connect the DME ignition signal? thanks for the reply.

[Shift_Now]

I am also interested in this seeing as how I have the same problem...