Another E30 M30 Swap Thread, this time with an 84 318i

[glnr13]

The only thing I can think of is the fuel rate output in the c103 since it's an 84 but would that cause a no start? I was under the impression it goes to the cluster .. no where can I find an actual picture or diagram of the c103 using google, r3v etc.

can't be that, the ECU and motor don't rely on those inputs to run. I ran without connecting those for 2 months.

This harness came off of a running m30b35 swap on the same motor... its an extended m20 harness though.

Hmm interesting though..

how is the engine harness connected to your chassis harness? adapter? spliced connector?

[the imitator]

This harness came off of a running m30b35 swap on the same motor... its an extended m20 harness though.

Hmm interesting though..

[ThatOneEuroE30]

Which harness are you using? I had a b35 harness and had to hardwire the main relay to the battery once I did that I got fuel and power.

[the imitator]

I'll have to see if u have a functioning obc, but 84 to 89.. I'll just have to look.

[Mr. Burns]

Go over this thread...
I was helping a buddy of mine diagnose the same issue with his M20 but with a wire tuck

Lots of good pointers in here

http://www.r3vlimited.com/board/showthread.php?t=327501

[the imitator]

Not a happy camper... and it has to be on my end of things
I have strong turn over, but the classic no fuel symptom upon checking the lines, But jumping the fuel relay yields fuel pumping successfully through the line, so the pump and filter are good, which means its back from the relay.. which is ecu,crank, (maybe main relay too?)

My crank positioning sensor is known working, but for giggles I tried one off a different m30

My 179 ECU is also known work, with a reputable chip, but I switched one out for a stock also known working unit.

I took the main relay and fuel relay out of a different e30 and tried those and no dice.

I switched around the crank positioning sensor with the VR sensor connections Many times to reassure I was reversing the connectors.

Grounds are tight on driver side and strut tower. There's one from the valve cover to the battery tray as well.

Coolant temp sensor is brand new

Lines are hooked up right

The only thing I can think of is the fuel rate output in the c103 since it's an 84 but would that cause a no start? I was under the impression it goes to the cluster .. no where can I find an actual picture or diagram of the c103 using google, r3v etc.

ill continue research on my end, didn't do any resistance testing assuming it was my mistake, and the back up parts and mine were in known working order.

Let me know if any of you successful candidates have any suggestions.

[ThatOneEuroE30]

Wait so why are you finishing this if your gonna do a n54 swap?

[the imitator]

always, wont be starting without video.

[G-Man the Visionary]

Looks like I may get out there today and get it started, swamped with studies of course.

Nice! Video for proof. Good luck man!

[the imitator]

Looks like I may get out there today and get it started, swamped with studies of course.

[G-Man the Visionary]

homie, what's new?

[the imitator]

its getting finished, a couple people got sick around the house, and I had to dedicate some time studying for insurance adjusting too. Tomorrow I am doing more n54 crap. and then this weekend hopefully doing m30 stuff. I have lots of n54 pictures in the PNW thread, just sorting lots of wiring.

My plan is, keep the shell, it has the ground controls, brand new bushings, no abs, manual options etc
Sell the whole m30 swap with all the goodies, and have that fund the n54 stuff.

[G-Man the Visionary]

So what exactly is going on? Staying m30 or nah? You're close enough, finish it off, sell to fund n54/55 swap...

[the imitator]

I KNOW!! sorry g-man, I found another 335i here locally for half the price i mentioned to you!! so i picked the wiring loom and other items off that the past day.

[G-Man the Visionary]

Sooooo close!