Another boring "no start" thread.

[MPD47]

Bench tested the injectors, they are in good working condition as well. Everything seems to point to the ECU yet it works in my other car...

[PiercedE30]

Break out the test light and check to make sure the injectors are getting 12v with the key on and have somebody crank it and see if the DME is grounding the injectors to fire them.

[MPD47]

Correct me if I'm wrong but wont the ground triggering be to quickly to measure with a test light or multimeter? I used to test them with a scope but no longer have one. I'll check that anyway, after dinner, and let you know.

[Mr.SWISS]

Have you swapped the DME realy( the white one in the bank of three) ? I would check that and look for power with the key on at that socket.

[MPD47]

DME relay is good, injectors trigger fine in car when you pull each to ground individually. I'm definitely not getting signal from ground (as I originally stated) for the fuel pump or injectors. Everything is point to the ECU yet it works fine when I swap it to a different car!

[BeirBrennerE30]

Did you ground the injector wiring harness to the front of the head? A lot of people forget that.

What does your c101 wiring look like?

[MPD47]

I left the harness attached when I pulled it from the e36 and left it intact when I put it in the e30, I was very very careful not to pinch it anywhere. My c101/x20 wiring is:


Which I confirmed was correct with ETM's from '92 and '89.

[Mr.SWISS]

Ah you're one of those guys. No one has dissected a treehouse adapter which has full functionality no one has been able to replicate. My vote is get the treehouse adapter and fire it up.

[e30serg]

Are the two swapped cars the same year; the same, or close build date? Maybe there are some differences between years?

[MPD47]

The engines have nearly the same build date, and identical harness' and ecu's. My adaptor is not my issue, it's wired perfectly and all the functions on it work. My problem is somewhere on the engine side, $400 for an adaptor that took me 30 minutes to wire up is a fucking joke.

[FredK]

This is probably unrelated to your problems, but is this 89 an airbag car? Because that chart is for an airbag car as the ABS goes through C101 pin 20.

[golde30]

89 is no airbags, i have an '88, but i cant seem to find my wiring diagram.

[matt]

swap harnesses...

[BeirBrennerE30]

Ah you're one of those guys. No one has dissected a treehouse adapter which has full functionality no one has been able to replicate. My vote is get the treehouse adapter and fire it up.

why not??/ everything in my cars work...

[Mr.SWISS]

why not??/ everything in my cars work...

You have ABS and Oil Level, MPG gauge and vehicle speed signal to ECU?