Tried to start the e30 today. (electrical troubleshooting)

[mlytle64]

If you want to know what all was done, check this new thread:

http://www.r3vlimited.com/phpBB2/vie...?p=53900#53900

ancient threat, but looking for what the resolution to this problem was. the link above to the "new thread" doesn't seem to work. anyone know what the answer was? or what the correct link is?

edit...found it by searching on all threads started by jordan. correct link for anyone else looking is:

http://www.r3vlimited.com/board/showthread.php?t=41708

[Jordan]

If you want to know what all was done, check this new thread:

http://www.r3vlimited.com/phpBB2/viewtopic.php?p=53900#53900

[M-technik-3]

Its alive :twisted:

Thanks to all that assisted in it taking its first breath.

So what was the last thing you tried??? Why hold us in suspense? I could care less about audio clip.

[EtaSport]

Most of you guys have mentioned jumping the pump. When I replaced fuel pump/filter, I cranked the car over and got nothing. I tried starting 3 times with no luck. No fuel in the filter. I thought I was screwed, but I just took out the relay and bridged the pump, let it run for awhile, put the relay back in, turned the ignition, heard the relay click, went to start, cranked for about 5-7 seconds and started right up. (when the key is switched to acc, the pump is supposed to come on to build the nessesary pressure to start the engine, My pump wasnt doing this, so I did it manually).

I'm not in the "electrical arena" of most of this stuff, so I commend all of you who know what you are doing when it comes to these harnesses. Does anyone know if the tank pump is connected to the line pump? Perhaps it will need to prime the line pump. I wont claim like I know it all jordan, but I say prime the system, check to see if you have fuel going to the injectors, then try starting it. I know that fuel system can be a pain in the butt, as there is so much stuff involved with everything. When my system went into "failure mode" I didnt think that I would ever get it fixed, but time and money took care of it all. Don't let it get you down, and you can beat the bastard! :) Good luck


+edit+ wow.. that was quick.. in all that time i took to type.. lol :) so what was the culprit? curious. I bet you feel about 100 times better. Have fun on that madien voyage

[MR 325]

NICE.

Need audio clips to prove it runs! :)

[Jordan]

Its alive :twisted:

Thanks to all that assisted in it taking its first breath.

[James Crivellone]

Disconnected them, no change. Cranks fine, but no fuel.

FYI I tracked he blue/brown connector intot he engine bay, looks like it plugs into the outside temp sensor.

yeah that is what it is for, find that green connector that is similar to the door gong connection and plug that back into your OBC Relay box, without it that will disable your fuel pump.


had a similar problem when I was taking an 88is apart, would not start, plugged that box back in and it fired right up.


if you already covered that then disregard =)

[rs4pro3]

I don't know, I'd try briding the fuel pump relay and see if it starts, that way you can maybe narrow down the problem a little.

[Jordan]

Disconnected them, no change. Cranks fine, but no fuel.

FYI I tracked he blue/brown connector intot he engine bay, looks like it plugs into the outside temp sensor.

[Jordan]

so disconnect both these plugs and try to start?



I dont see what that would do, but i shall try

[rs4pro3]

try disconecting it from both the ecu harness and chassis harness and see what that does.
The wires that had to be connected on cars without the OBC might of been there on the Engine side, I just can't remember.

[Jordan]

The other end of the harness ends over by the ECU, it is the OBC harness I guess. It has a green connector (to the OBC) on the other end, as well as a few other random connectors.

[rs4pro3]

I'm not sure, my 318i and my 88 325is both don't have it connected but on one of the 2 85 chassis harnesses I have in the Attic it is connected. Where does that harness run? Maybe try disconecting it?

[Jordan]

Yeah, i JUST took that photo. That is how it is currently connected.

what is that red/red-white wire before, because i dont even have that giant green connector on the cluster right now (i have it somewhere)

[rs4pro3]

Those would be them, is that picture current? as it looks like the OBC harness is plugged into it. Oh and on one of your previouse posts you said you have a Lone white single plug with a red and red white wire going into it, this plugs into the little green plug that Slides into the back of the Speedometer.