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Replacing fuel filter 94 Legac-how to relieve fuel pressure?

Posted: Sat Jul 05, 2003 5:11 pm
by Dave G
My manual says to pull the access cover under the rear seat and unplug the fuel pump, then run the engine until it dies. Is there an easier way to kill power to the fuel pump?

Posted: Sat Jul 05, 2003 7:59 pm
by vrg3
It's actually pretty easy to get to that connector... Three bolts hold the rear seat bottom in, and then something like three or four screws hold the access cover on.

I've always done it that way, but another option that should work is unplugging the fuel pump relay under the dash. That is a huge pain to reach but if you know where it is you can do it. You kind of sit on the ground outside the driver's door facing away from the car, and reach in with your right arm. Follow the firewall up and to the left and feel for the relays. The ignition relay is brown and rectangular and next to it is the metal cylindrical fuel pump relay with a green connector. If you remove the trim panel above the driver's knees you'll be able to kind of see them with a flashlight.

Posted: Sat Jul 05, 2003 8:20 pm
by evolutionmovement
Call me lazy, but I just pop the gas cap and pinch off the lines.

Posted: Sat Jul 05, 2003 8:58 pm
by morgie
I waited about one hour and there were no more pressure.

Posted: Sun Jul 06, 2003 6:26 am
by eastbaysubaru
Yup, I too just waited a few hours. It wasn't nearly as messy as I thought it'd be.

-Brian

Posted: Sun Jul 06, 2003 3:44 pm
by czo79
thats weird...on my 91 turbo...I pull up the rear seat...and the elec. connection for my fuel pump is right there under a peice of protectic foam. There isn't any panel I have to pull up. Are others like this?
thanks
micum

Posted: Sun Jul 06, 2003 4:37 pm
by morgie
Yup mine is like that... i discovered that connector when my fuel pump decided not to work ..... hehe

Image

Posted: Sun Jul 06, 2003 10:34 pm
by Dave G
It turns out that in my 4WD model, the plate is under the carpet just behind the rear seatback. All I had to do was unscrew the bar that holds down the carpet and I could get right at it. But it looks like I'll have to cut the lines off the filter unless somebody knows a trick.

Posted: Sun Jul 06, 2003 11:41 pm
by morgie
try with some "pliers" (pinces) and a flat-head screw-driver

Posted: Mon Jul 07, 2003 3:55 am
by paf
on my wagon where the rear passenger side speaker is there is something that seems to be a realay.. I always figured it was for the fuel pump... if thats not it what is it???