318is not starting

[E30J]

Okay I jumped 87&30 from the relay and disconnected right before the fuel filter and I get no gas.. Checked the pump under the seat and everything seems fine.. Can I test the pump w/ it jn the tank by touching the battery terminals to the 2 nuts on the pump itself? Guessing one is hot and one is cold

[DesktopDave]

You had the key turned on, right? Also make sure you're testing the correct relay. It'll have a thick red wire to feed the pump, then a green/violet wire heading off to fuse 11. That powers the pump.

You can test the pump directly. IIRC it is polarized, be sure you put positive to the terminal where the green/violet wire plugs in. Might have a brown grounding wire off the other pump terminal.

The four nuts that are there are for the fuel level sender. The pump housing twists out as one unit - has no bolts.

[E30J]

Okay got some video and a few pics. Tried jumping the fuel relay, with the key on, and got nothing.. then hard wired directly from the battery to the violet connector and got nothing then tried the green and also nothing.

Tested both relays and they don't seem to be getting any feed through them.. looks like everything is shot

will post some pics when i figure it out

[E30J]

Heres a picture of how i wired the fuel pump directly to the battery

[E30J]

Heres a video of what happens when i do the press gas 5 times in 5 sec

[E30J]

Heres part 2. same vid just wouldn't let me email myself the whole thing

[keflaman]

Heres a picture of how i wired the fuel pump directly to the battery

That's your fuel level sensor. Pull the other connector and with the key turned to "On" check for power: pin 2 (green/violet) is hot, pin 1 (brown) is ground.

[E30J]

Heres a picture of how i wired the fuel pump directly to the battery

That's your fuel level sensor. Pull the other connector and with the key turned to "On" check for power: pin 2 (green/violet) is hot, pin 1 (brown) is ground.

whoops.. alright will check the other one thanks

[keflaman]

You're welcome. If it turns out to be a bad pump you'll have to pull the sensor out first in order to pull the rest of the assembly.

[E30J]

You're welcome. If it turns out to be a bad pump you'll have to pull the sensor out first in order to pull the rest of the assembly.

Tested the correct pump lol and still not getting any fuel. Looks like i need a fuel pump and new relay. Will change those then hopefully crank her up! If not, ill be back lol.

Thanks all for the help!

[bigskyis]

Just an observation...although I am having troubles with my e30 318is...it will start and idle. If I disconnect my AFM it shuts down immediately. Granted, you might have fuel pump issues...based on my observation I am willing to bet you won't get it started without the AFM in place. Just my .02 worth. Good luck.

[E30J]

Just an observation...although I am having troubles with my e30 318is...it will start and idle. If I disconnect my AFM it shuts down immediately. Granted, you might have fuel pump issues...based on my observation I am willing to bet you won't get it started without the AFM in place. Just my .02 worth. Good luck.

Cool thanks. Guess i will find one and hook it up.

Cant seem to find the relay i need anywhere though. Will put the new fuel pump in then jump the relay and see if she fires up

[DesktopDave]

The fuel pump relay is just a normal 4-pin Bosch 30amp relay. You can find compatible relays at most auto stores. The orange Bosch relay is optimal (has some voltage protection resistors IIRC) but for a temporary fix you can use any 4-pin relay. If it has four terminals marked 30, 85, 86, and 87 it'll work.

The wiper or fog light relay in the fuse box is good for a roadside quick fix.  The main relay has five pins, they're a bit harder to find.

[E30J]

The fuel pump relay is just a normal 4-pin Bosch 30amp relay. You can find compatible relays at most auto stores. The orange Bosch relay is optimal (has some voltage protection resistors IIRC) but for a temporary fix you can use any 4-pin relay. If it has four terminals marked 30, 85, 86, and 87 it'll work.

The wiper or fog light relay in the fuse box is good for a roadside quick fix.  The main relay has five pins, they're a bit harder to find.

Okay thanks. Unfortunately I live on an island and I've been to every auto store down here and can not find the 4 pin orange bosch one. No one even has an off brand to match it up.. I will take out the fog light one and give that a try thanks for that

[keflaman]

Okay thanks. Unfortunately I live on an island and I've been to every auto store down here and can not find the 4 pin orange bosch one. No one even has an off brand to match it up.. I will take out the fog light one and give that a try thanks for that

I can send you one for the price of postage. Let me know.