HELP has anyone put a e36 m42 in e30???

[bake_e30]

Hi,
I have recently put a e36 m42 into my e30 316, using the e36 loom and c101 to x20 diagram i wired my c101 off my old loom to the engine loom.

The problem is that when i turn the key to start it the starter starts turning for a split second then stops... I have checked all earths and even backed them up using jump leads.

I also have an aftermarket sigma immobiliser but I don't think that it has anything to do with it as this worked fine all the time I have owned the car and its wired through the dash side of the loom.

Thanks Aaron

[ross_jsy]

Just to check, you can turn the engine over by hand right?

When it stops, does the starter still sound like it's straining?

[bake_e30]

Yeah, as i turn the key the dash lights flick off and on and i have to reset my immobiliser as if it cuts all power

[Brianmoooore]

Check your battery connections, especially the smaller wires that bolt to the + terminal.

[bake_e30]

I have checked all connections

It seems is if something is switching it off

Has anyone done c101 to x20 and are all e36 x20 pinouts the same??

[Brianmoooore]

I have checked all connections

Check them again, and related ones, such as the chassis to engine strap.

[makman]

You checked your relays mate? Could have a weak one with an intermittent output. Are you getting 12/13v to the starters main terminal, also check that your getting the same to the 'exciter' terminal on the starter motor when you rock the key to crank. It could be shorting out in the loom or plug or something along those lines.

[Jos]

I have checked all connections

It seems is if something is switching it off

Has anyone done c101 to x20 and are all e36 x20 pinouts the same??

for all the important stuff yes.

Does the starter spin correctly from the diagnostic connector?

[bake_e30]

I sliced the casing off the starter wire and bridged it to a live and the starter turns over but no when i turn the key

Has anybody got a pic of the e36 to e30 loom??

[magpie]

are the 10 and 8 mm nuts tight on the starter

[Jos]

http://www.akgmotorsport.com/e30convpins.html

Last table is pretty much what I used but I don't think that's your problem.. relays and connections are more likely.

[bake_e30]

Thanks all, i will check everything that is mentioned

When i get home I'll cross reference the wiring diagram to mine

Which relays should I look out for?

Everything wss working fine when I drove the e36 2 hours home when i bought it as I bought the complete car