Shutting off randomly..completely shutting off. And won't start up

[lolcantturn]

mine was doing that too when i first bought it. i knew it was the fuel filter so i change it and now it start every single time.

Oh damn, so many variables for such a problem.
Where's the fuel filter/ fuel pump located?

[mr.vang]

under the driver side door. GL

[lolcantturn]

under the driver side door. GL

Thanks!

[lolcantturn]

After searching a bunch of threads I've concluded it's this in this order:
Main relay
Fuel Pump Relay
Crankshaft Sensor
Fuel Pump
ECU

Can I buy either of those relays at a generic auto store? I'd really like to get my car going by tomorrow.

Also is there a way to test the relays to see if they're working? I'd rather not shell out $30 for a relay that won't fix my problem.

[lolcantturn]

Bump..

[lolcantturn]

Went to radioshack and got a 12V 30amp relay..
Put it in my main relay, tried to start it up, nothing.
Waited 5 minutes, put the same relay in my fuel pump relay and it started up relatively quickly. Hurray
Drove it around, did about 3 miles, woot this is going swell
going down the block to my house, sputtering and misfiring like a two-step anti-lag system again, then shuts off and doesn't turn back on. shit

Guess i'm going to try that crank sensor.......

[StereoInstaller1]

Also is there a way to test the relays to see if they're working? I'd rather not shell out $30 for a relay that won't fix my problem.

Yeah, you can jumper it. A foot of wire and 3 1/4" male spade lugs is ideal.

mine was doing that too when i first bought it. i knew it was the fuel filter so i change it and now it start every single time.

I have never seen a bad fuel filter shut a motor off instantly, they always sputter to a stop. This guys motor is just going dead, like an instant off.

[lolcantturn]

Yeah, you can jumper it. A foot of wire and 3 1/4" male spade lugs is ideal.

I have never seen a bad fuel filter shut a motor off instantly, they always sputter to a stop. This guys motor is just going dead, like an instant off.

Went to radioshack and got a 12V 30amp relay..
Put it in my main relay, tried to start it up, nothing.
Waited 5 minutes, put the same relay in my fuel pump relay and it started up relatively quickly. Hurray
Drove it around, did about 3 miles, woot this is going swell
going down the block to my house, sputtering and misfiring like a two-step anti-lag system again, then shuts off and doesn't turn back on. shit

Guess i'm going to try that crank sensor.......

well my relay(s) seem to be working fine now. Replacing the fuel pump relay might have solved a little bit of the problem, but the problem still exists.
But I don't see how a fuel filter would be my problem in this case really..

[StereoInstaller1]

well my relay(s) seem to be working fine now. Replacing the fuel pump relay might have solved a little bit of the problem, but the problem still exists.
But I don't see how a fuel filter would be my problem in this case really..

You cannot buy a correct relay for main OR fuel at Radio Shack. BMW uses the same physical shape, but the connections are not the same.

[lolcantturn]

You cannot buy a correct relay for main OR fuel at Radio Shack. BMW uses the same physical shape, but the connections are not the same.

:???: Oh well that's a little embarrassing,
They had the same 87, 30, 86, and 85 connections that's why I thought it would work..
Just out of curiosity, what makes them different?

[StereoInstaller1]

Well, look at the pins on your radio shack relays: you have 30 (com) on the bottom, 87a(NC) and then 87(NO) as the center row.

Then you have 85 and 86 (coils) across from each other, right?

So now look at the pictogram on the side of the bmw relay. See how it has the same stuff in the same sequence? Now, look at the pins on the standard relay and the BMW one: see how 87 is 85 and 30 is 86?

[lolcantturn]

Well, look at the pins on your radio shack relays: you have 30 (com) on the bottom, 87a(NC) and then 87(NO) as the center row.

Then you have 85 and 86 (coils) across from each other, right?

So now look at the pictogram on the side of the bmw relay. See how it has the same stuff in the same sequence? Now, look at the pins on the standard relay and the BMW one: see how 87 is 85 and 30 is 86?

Oh hmm you're right.
But why would it still work on my car if the connections are wrong? weird.

Also another thing, as I was taking apart my engine to fix the head, I noticed this piece is broken

In addition to that, my cam gear cover is broken on one side so it's somewhat loose
And my ignition rotor shows signs of rubbing against my distributor cap

Can this be correlated to my problem?

[StereoInstaller1]

Oh hmm you're right.
But why would it still work on my car if the connections are wrong? weird.

it has to be jumpering from 87 to 30 somehow, or from 85 to 30.

Also another thing, as I was taking apart my engine to fix the head, I noticed this piece is broken

In addition to that, my cam gear cover is broken on one side so it's somewhat loose
And my ignition rotor shows signs of rubbing against my distributor cap

Can this be correlated to my problem?

Yes, that would explain some of your issues. I did point that out earlier, y'know.;)

[lolcantturn]

it has to be jumpering from 87 to 30 somehow, or from 85 to 30.

Yes, that would explain some of your issues. I did point that out earlier, y'know.;)

Oh haha, sorry! I'll try to get on that problem as quick as I can then

[lolcantturn]

Changed the relay to proper relays.. nothing. both fuel and main.
cleaned out the cam sensor.. nada.
I'm going to put a cam cover I got from Guten and hope for the best..

if it's not that, its my fuel pump, and if not that, it's my ECU. ahhhhh.