5 Connection questions...

[Beej '86 325es]

I've searched and searched, but can't find clear answers on some of these, and was hoping to get some help. I've got 5 things that I'm stuck on:

1) Which hose goes where?


2) Where does the connection on the bottom right of the throttle body go?


3) This might be related to #4, does the ground for the starter come from the engine harness?


4) Where do these two grounds go?


5) Where do these two wires for the diagnostic port go to? Are they both grounds?


Thanks for your help guys! - This thing is getting so close! :D

[So Live]

Pic 1: 1 & 3 (if they come from the back of the car via hard lines) are fuel lines. get the fuel pump to turn on youll quickly figure out which one is the supply and which is return. the suply goes to the front of the fuel rail and the retun goes to the back of the rail.
#2 looks like one that goes to the charcoal canister. Where does it come from?
Why is there a fuel filter in your engine bay? did you put it there?

I can find out about Picture 2 tomoro

Pic 3 & 4: Yes the grounds come from the engine harness and those two wires you have there go on two different poles on the starter (if its like mine) what car is your starter from?

Pic 5, hate to say it but your gonna have to find out what color they are under the shrink wrap. The brown one goes to the chassis. the red one(s) goes to the power distribution block.

Hope it helps

[erik325i]

Pic 3 & 4:
those two wires you have there go on two different poles on the starter (if its like mine)

You sure about that? The two large wires on that starter in that pic look like they are in the right place. One is the power to the starter, and the other is the wire to the alt. Correct me if I'm wrong though...

-Erik

[etxxz]

yes those two larger ones are right, but the ones he's holding in the pic go to two different solenoid poles (grounds). The starter solenoid will have two different sized screws, match bigger one with bigger wire and smaller screw with smaller connector.


pic two: i'm almost sure the two rusty ones are coolant lines (kinda sure). the third bronzed color is a vacuum line that runs to a valve round(ish) thing (that has an electric plug to it) and then to the cannister. I have that Throttle body with the lines and valve thing in my garage. m50 right?


pic 1: idk where i'm looking at but know that your old engine's fuel "IN" had to be a long line since it had to run to the front of the engine. Similarly, the return ran to the back. The cannister line should be pretty short since its mounted close to the relief hard line. hope this helps sorry for my unpreciseness.

pic5: solved

[So Live]

Im kinda thinking my e30 starter only had one other solenoid pole. my m50 starter has 2.

Make sure you dont torque down the small poles too much!!! they will break

[So Live]

heres your throttle body connection(3,1, and 4): and yes its connected to the one you asked about http://www.realoem.com/bmw/showparts...72&hg=13&fg=15

and your wires on the ecu side of things:



thats what i did with mine, you get the idea. anythign red goes to the block and anything brown goes to ground.

Good luck!!!

[Mike B.]

4, 5, and 6 are fuel sytem

4 is the E36 fuel filter, you can by-pass this and use the E30 fuel filter. Just run E30 fuel line directly to the fuel rail.

5/6 are the evap system. There is a line that runs from the fuel tank to one port on the canister and another line (with the evap valve) that runs to one of the canister ports to a port on the bottom of the throttle body.

[Beej '86 325es]

Thanks for your help so far guys, it's been a big help. Here's what I've figured out so far:

Pic 1)
-#3 is fuel in - goes to #4 (fuel filter)
-out of #4 to fuel rail in
-out of fuel rail to fuel return #1
-#2 is the ventilation, it goes into #5 or #6 (not sure if it matters)
-#5 or #6 goes into that funky valve and then to the bronze port on the throttle body

Pic 2)
See above, goes to valve as shown in this picture:

http://www.realoem.com/bmw/showparts.do?model=BF32&mospid=47430&btnr=13_0372&hg=13&fg=15

Pic 5)
The longer/fatter connection that splits out closer to the diagnostic port is the power, and the other one is the ground

I'm still trying to figure out #3 and #4...any thoughts?
BTW, Happy Thanksgiving!

[EtaSport]

3 and 4 are related. 3 and 4 are your starter wires. the larger one is the black/yellow start input wire. it goes on the bottom of the starter (i think it says KL50) the smaller one is the black/green unloader relay wire. it goes to the top of the starter, might say KL15. Pull back the black covering to verify wire colors, but that is the only thing that makes sense to me.

You will have to put a spade connector on the ends and just plug them right onto the pins.

[Beej '86 325es]

Cool thanks! Did some reading in the Bentley...

Pic 4) The longer/fatter wire is black/yellow, it gets connected to the spade connector on the starter (see pic 3) labeled "50".
The shorter wire is black/green is the "load reduction" wire or something and would normally get connected to terminal "30h" on an '88 and on starter. I am using a starter from an '86, so I assume I simply do not use this.

So I guess my only question remaining is the specifics of these two in the picture below... I'm assuming they're in some way related, and maybe I'm missing a part or some hoses.

[EtaSport]

where 1 (the big one) goes to the intake boot. where 2, goes to the evap purge valve and to the charcoal canister.

i think you still need the unloader for some reason.. I cant remember, but if there definitely is no pin on the starter.. then it gets spliced to the black yellow i think. someone else needs to verify as its been like 2 years since i put my 89 harness on the eta motor.

[So Live]

Top Where is part of this system: http://www.realoem.com/bmw/showparts...84&hg=11&fg=15

The end fitting goes to the big rubber intake boot (after MAF and before throttle)

second where is to that valve and to the charcoal canister

*edit, maybe i should read above posts! well theres the diagram for ya!

[Beej '86 325es]

Here's another one for you guys, since you were so much help already...

A) What is item #11 in this picture? It says thermostat, but I can't figure out for the life of me where it would go!

http://www.realoem.com/bmw/showparts.do?model=BF93&mospid=47486&btnr=11_1142&hg=11&fg=35

B) I have two plugs and two sensors remaining that I cannot figure out (water and oil in picture).
The one with the yellow zip tie has BRN/YL and VIOLET wires.
The one with the pink zip tie has a BRN/WT wire.
Both sensors have only one prong. I used the E30 temp sensor, can I not use this one?



Thanks!

[EtaSport]

Number 11 is the water valve for the airbox. It opens and closes the flow of coolant to the throttle body based on the temperature inside the airbox. I didnt use it. I didnt even run any lines to my throttle body, the inlets were corroded shut. My car has seens several 20 degree starts and it hasnt seemed to be a problem.

I believe that the plug with the yellow tie is for the coolant sensor. The e36 coolant sensor has two prongs i think. The other one should be for the oil sensor. I would wait for another response though, since my coolant gauge works, but my oil pressure light doesnt seem to ever come on.

[Beej '86 325es]

I had a feeling that #11 was worthless.

I read somewhere on this board that you could use the coolant sensor from the E30 325, but I think I'm going to have to order a new sensor. If the plug's got 2 prongs, I'd say that whatever they're plugging into is gonna need them both.