Author Topic: My pile shut off on my today. (Read 5917 times)

Pedro · « **on:** June 21, 2007, 08:06:12 PM »

My car saw a good share of its down time replacing/upgrading/fixing stuff. So she was all good and ready and ive been driving it for like a week now. Just filled up my second full tank since i started driving it. This morning i was headed to work and im cruising at like 80 when i feel it just start slowing like i let off the gas pedal. I'm in the fast lane so i put the hazards on, cross the double yellow then to the center divider. as im crossing through the carpool lane the car shut off.

It turns over and coughs like it wants to start but just never makes it there. i feel like its not getting fuel. So before i start getting into it i thought i'd see what you guys have to say. I hope its not the pump. the one in it has been in the car a while but doesnt not have many miles on it.

What do you think?

twinpop171 · « **Reply #1 on:** June 21, 2007, 08:37:56 PM »

Sounds like a fuel pump to me IMO.
Dan.

Pedro · « **Reply #2 on:** June 21, 2007, 09:09:31 PM »

The fuel pump has gone out before and thats what it feels like its doing. But with the fuel pump i had the luck of it being intermitent. You know everyonce once in a while it wouldnt start, but now its just wont start at all.

D. Clay · « **Reply #3 on:** June 21, 2007, 09:27:25 PM »

It's fairly common for the wiring connectors/plug to the fuel pump to not make contact - intermittently. Spread the prongs on the pump a bit to create pressure between them and the plug. Could also be a fuel filter or the sock on the bottom of the fuel pump..

Pedro · « **Reply #4 on:** June 22, 2007, 06:15:56 PM »

i let it sit over night and i tried starting it and i got nothing, it just cranks over.

Does the fuel pump always run? I checked it with my DMM and im getting power to the pump but its not turning on. I know that sometimes i would hear it and sometimes i wouldnt.

Would the pump go bad from just sitting there?

gearheadE30 · « **Reply #5 on:** June 23, 2007, 07:54:10 AM »

Not from sitting there, but it might be worn as it runs whenever the engine is on. Something could be loose as well. Sounds like you need a new pump.

RED IS 91 · « **Reply #6 on:** June 23, 2007, 09:39:01 AM »

do a search ,there is plenty of info about fuel pumps and test .
To answer your question ,the fuel system has a return line so I assume that when the car is running the pump runs all the time together with the fuel pressure regulator.
When my pump went I put 12 volts directly to the pump and got nothing . that told me that the pump was no good. Don't go cheap , buy the correct one if you need it.They should last between 150 - 200,000 miles.
You could also hook up a fuel pressure guage at the pump and crank the motor to see what you have for pressure . You should have around 43.5 psi.
GOOD LUCK

Pedro · « **Reply #7 on:** June 23, 2007, 07:31:52 PM »

I dont have any power going to those two prongs in the pic above. I have power before the relay and none at the connector.

RED IS 91 · « **Reply #8 on:** June 24, 2007, 06:30:54 AM »

Relay may be bad
you can try and jumper the relay. I believe it's the center one in this photo but I'm not sure . Hopefully someone will confirm this .When you turn the key to the on position you should hear or feel a click of the relay .

Vladi · « **Reply #9 on:** June 24, 2007, 10:13:29 AM »

It's the white one.

Pedro · « **Reply #10 on:** June 24, 2007, 11:52:11 AM »

Quote from: RED IS 91;28394

Relay may be bad
you can try and jumper the relay. I believe it's the center one in this photo but I'm not sure . Hopefully someone will confirm this .When you turn the key to the on position you should hear or feel a click of the relay .

I ran wire straight from my battery to my pump and it turn on so i know the pump is working, i then used the same wires and touched them to the middle relay and clicked. i did it about 10 times to make sure it wasnt intermittent. I even tested out two others i took from a junkyard and they clicked also. i swapped them out and i had the same problem.

Quote from: Vladi;28401

It's the white one.

according to this pic the relay is the middle one

Pedro · « **Reply #11 on:** June 24, 2007, 11:54:29 AM »

does anyone know where the wires for the connector to the pump go when they are above the tank but under the car?

RED IS 91 · « **Reply #12 on:** June 25, 2007, 01:23:16 PM »

When you turn the key to the on position do you have 12 volts at the pump(under the rear seat) ?
When you jumped the relay did the pump run?
Are your spark plugs wet ?

Pedro · « **Reply #13 on:** June 25, 2007, 07:32:05 PM »

Quote from: RED IS 91;28485

When you turn the key to the on position do you have 12 volts at the pump(under the rear seat) ?
When you jumped the relay did the pump run?
Are your spark plugs wet ?

No i didnt have 12 volts or any voltage for that matter. it was a big fat .0002v

Yes, but when i jump it, it sounds like the injectors are spraying too. I'm not really sure what that sound is.

I never checked the plugs but ill go check them now.

Pedro · « **Reply #14 on:** June 26, 2007, 12:49:52 AM »

So today i finally got 12v at the fuel pump, i removed the cover of the relay and watched it make contact while cranking so i know it was running the pump but its still not starting. It just cranks. I also had a crank sensor laying around so i swapped that and no luck. Anyone else have any ideas i can try.

Ive read through all the threads i could find through seaching and ive checked all wires, fuses and what not and still no dice. i have no idea whats up with the car.

ECU??