Fueling problem.. Again

[SamE30e]

Ok,

So I was at work delivering pizza, because i'm a baller like that. I pull into the parking lot and my car dies.

There is spark, There is power going to the pump in the tank. But I can't hear the driver side pump turn on when I hold the AFM open and turn the key.

Is the fuel pump relay the one on the center of the block of 3?

If so, there is power to that, and all the fuses are good.

Should I be able to hear the in tank pump when I turn the key?

Thanks

Sam

I need help a.s.a.p because I have to work on monday :(

And last but not least would the car run with just one pump working?

[SamE30e]

Actually, I guess a good question is, which pump is the main and which is the AUX? Is the in-tank the main pump?

[e30_kid89]

Teh in-tank pump is the Aux pump.

[jlevie]

Your 87 has two pumps. A transfer pump in the tank (passenger or right side) and a high pressure pump underneath the car in front of the driver's side rear wheel. Either or both could have failed.

[SamE30e]

Will the car run with only the high pressure pump working?

[jlevie]

That depends on the condition of the high pressure pump and the fuel level. If the high pressure pump is in good condition and the tank is above half full, it should run.

You probably won't hear the pumps run just from turning the key. The DME only runs the pumps when it sees timing reference data from a turning engine. The simple test is to use a jumper in the fuel pump relay socket to force the pumps on.

[SamE30e]

I'm almost positive that the pumps are gone. I have an e36 intank pump. I was told that it will fit. When its not -15 out i'm going to put it in.

[DaveSmed]

You probably won't hear the pumps run just from turning the key. The DME only runs the pumps when it sees timing reference data from a turning engine. The simple test is to use a jumper in the fuel pump relay socket to force the pumps on.

This part is important. Give this trick a try:

[SamE30e]

Which ones to I jump?

87 and 30?

[SamE30e]

I jumped them and no dice. I can't hear them.

[DaveSmed]

Wiggle the fuse around a bit and make sure the key is on, Main relay has to be on.

[DaveSmed]

Oh and if you still dont hear them, verify fuse 11 is getting power. That is what your jumper should be supplying power to, and fuse 11 then goes back to both fuel pumps.

[SamE30e]

The fuse is good too. That was the first thing I checked when it died.

When I jump 87 and 30, the relay next to it clicks on. And I hear no pumps.

[DaveSmed]

Ruh-roh, not looking good for the fuel pumps then. My guess is the aux died awhile ago, and it sounds like the main finally had enough of the added strain. My condolences. If the thing is still in a parking lot, leave that fuse in there and get underneath the car. In front of the drivers side rear tire above the fuel filter is the main pump. Give it a few "love taps" and if it springs to life, hop in and promptly drive the car somewhere you can work on it. That might work, but that trick doesn't work very long. Theres a good chance you have one shot to get the thing somewhere more car repair friendly than a parking lot.

[SamE30e]

It's in my driveway right now. I just pulled the aux pump. I have a e36 pump, but it's too tall. Now does that pump just transfer from one side of the tank to the other? Or does it push it into the other pump?

If it pushes it to the other pump could I just modify the pickup to accept the other pump?

I'll get pictures in a minute.