Reply With Quotetowards the front and hooks up with the oil level sender in the bottom of the oil pan if I recall correctly.
M30B35 - What's this connector/cable?
Anyone know what this connector/cable is or does?
Grand Master
that wire goes through the tube....
towards the front and hooks up with the oil level sender in the bottom of the oil pan if I recall correctly.
... can you tell me why the hell the previous owner of my 535 connected it to the throttle housing sensor as well?!Originally Posted by Scott H
Bought a E34 535i with an E28 M535i-engine.. The previous owner never got it running. Lotsa weird connections here. E34 535i cabling and E34 535i ECU..
Grand Master
The throttle position sensor is three pin plug....
the one you circled should be two pin. are you positive it was connected to the TPS? it runs up to the same area that the TPS wire is at but it's not a similar wire. The engine wiring harness has multiple plugs/fittings but each can only be plugged in to one thing as they are all unique.
... can you tell me why the hell the previous owner of my 535 connected it to the throttle housing sensor as well?!
Bought a E34 535i with an E28 M535i-engine.. The previous owner never got it running. Lotsa weird connections here. E34 535i cabling and E34 535i ECU..
Grand Master
Yup.
It's pretty much impossible to cross connect the harness plugs as each plug is unique. Of course, since you have an E28 engine in the E34 some strange things might be plausable.
Scott's correct in that plug is for the oil level sensor. The harness from there runs up into the cable tray the sits above the injectors and from there to the main harness to the back of the firewall.
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
The connectors aren't there. They've been cut of and the cable coming from the fuel rail has been extended and connected to the TPS.
It's an engine from a '87 E28 M535iA, with a E28 535i manual gear box, E34 wiring harness and I'm also going to use an ECU from a '89 E34 535iA, in a E34.
As I said the previous owner never got it running, and there seems to be several reasons for this..
For example this power cable wasn't connected:
Also I'm trying to swap the "driving belt wheel" (not sure if this is the correct term in english) and it's sensor to ones from an E34, because the E28 one lacks all the tooths for the sensor to read of:
And I'm swapping the sensor on the throttle body (the E28 one has a couple of hoses connected which the E34 one didn't have, therefor I'm going to use the E28 throttle body). The E28 sensor only has three pins, the E34 has six..
Grand Master
ish....sounds like you have yourself a...
Pro-ject
It's definitely a three pin. And the picture is NOT from the E28 engine. It's from a working '89 E34 535i engine. If you don't have a three pin there, there might be differences from year to year, or differences between EU and US models.
It's quite strange you both says this, cause there's a whole bunch of identical plugs on both my M30 engines, both with E34 wiring harness, one is 100% original. All the three pin plugs goes together fine. For example both the ones on the fuel rail, the oil level one, and probably others..
Oh yeah..Got it cheap. If I don't get it working I'll swap the engine with one I've got "lying around" that's working and sell the M535 one.
Grand Master
Hmmm.
Looks like a mess. The more I think about it, the more messy it gets. I would think:
1) You want to use the E28 ECU, not the E34 ECS to match the engine.
2) You have an E34 engine harness. Does it pin out to the E28 motronic? I would guess not.
3) That pic of the TPS seems to show a manual TPS but the screw harness laying next to it would be for the automatic version. What E34 engine harness do you have?
4) If someone cut of the wiring harness loom that drops from the injector tray, you would loose...hmmm...the O2 sensor wires, the starting solenoid wires, the oil pan sensor wires...hmmm...and maybe some of the alternator wires but I'm not sure on those. Would have to look on mine. That's quite a mess for sure.
5) Didn't the E28 have the CPS off the flywheel and not the front of the engine? I suppose this is why you're trying to move the E34 pulley to the E28 engine?
6) do you have the driveline connected? I once tried to install an E28 tranny into an E34 and the driveline won't bolt up. The output shaft length is different on the E28 - longer.
Hmmm...as Scott said...you have a real pro-ject. I would almost think it would be easier and cheaper to a) buy an E34 engine and harness and plug that into you chassis and b) sell the E28 engine. You're going to end up with an underpowered, bastardized E34 when you're all done with it.
Last edited by Jeff N.; 02-18-2006 at 05:48 PM.
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
5-10 Grand Master
it is a 3 pin on e34/32s and there is lotsa stuff that will cross plug and if you don't beleave that take the intake off of the m50, the wire lengths will usually help with what goes where and on a old harness they will be bent in mostly the correct direction. had to fix a m50 where some goober did some work on it and kept frying computers, popped 3 or 4 before he finally brought it in for us to do it right, had a ton of stuff cross plugged
all america wants is cold beer warm cat and a place to take a poop with a door on it
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