1996 GTB/BG5 fuel pump issues

[Guest]

Got similar issues to this thread: http://www.clubsub.org.nz/forum/index.php/topic,1477.0.html

Symptoms:

• Fuel light came on with petrol in the car
  
• Car would crank but not start after filling up
  
• Car was running poorly/wouldn't boost or if it did it wouldn't over 5psi
  
• When the car wouldn't start fuel pump wasn't turning on (wasn't hearing noise)
  
• Got the car started by hitting the fuel pump (knocked out of dead spot?) but still doesn't run too well.
  

Fuel pump seems to be getting power and the connections are clean, so I'm assuming this is going to have to be replaced. I'm just wondering what function the fuel pump relay has in this? Is the relay responsible for turning the pump on? Could this be faulty? I can hear the pump whirr for a few seconds when I turn the key.

I tried having a look in the engine bay and under the dash for it but couldn't find anything - can anyone point me in the right direction? Is there anything else I can check personally before taking it in to get checked out this weekend?

Edit - I found this: http://wiki.answers.com/Q/Where_is_the_Fuel_pump_relay_on_95_subaru_legacy

 

The fuel pump relay on a 95 Subaru Legacy is located about 10 inches above

the internal fuse box.

The internal fuse box sits on the left side of clutch/brake/gas pedals against the

firewall.

You wont directly see the fuel pump relay, in order to get relay into view you will need to:

-unscrew the fusepanel (this helps moving wiring around as well as open up some space)

This opens up an inch or two of more space for your hand to get into.

Using a flashlight, you will be able to see 3 cyndrical plugs.

The fuel pump relay is the green one. Twist the relay 180 degrees to the right, then pop it off the mount, and finally unplug the green connector.

The relay is silver in color, to test if the relay is failing use a ohm reader. Touch both

connectors 1 and 2.

But I couldn't see the relay Could someone confirm if this is the same for this model of Legacy?

[Joker]

checked for broken/worn wires under the back seat?

[Guest]

Do you mean on top of the fuel pump itself? I'd been told it's common for the white connector to melt or get dodgy but all of the connections are clean and seem fine.

Currently I can start the car probably 95% of the time, but it may sputter and die, or if it does run, when you drive it you sort of get 'bursts' of power (and hitting the pump helps).

[Joker]

nah general under the seat area... ie where the wires run close/under seat 'mount' points

[albaru]

Check your mileage? Fuel pumps seem to know when it's 150,000kms. If the pump's done this mileage start the fault location process by replacing pump.

[Guest]

Wires around the seat seem OK, has done 180km+ so I wouldn't be surprised if the fuel pump needs replacing

[log1call]

Temporarily hot wire the pump in place and see if it cures the problem. If it does fix it don't leave that set up like that but fix the problem. The relay, if it's in the drivers door pillar, is way up above the fuse box and hard to see.

[Guest]

Is the relay above the fuse box on the right hand side? I'll try have another look when I get home from work.

[log1call]

It's best to take the fuse box out if you want to get to the relay, but you should try and confirm the fuel pump is good(or at fault) first.

[Guest]

Got a new pump, the hoses on the top are angled differently but I guess I can match them up once the other one is out.

Old pump:

http://www.iforce.co.nz/View.aspx?i=uipcwndn.jpg

New pump:

http://www.iforce.co.nz/View.aspx?i=zttysyrj.jpg

http://www.iforce.co.nz/View.aspx?i=kavchy1x.jpg

[Guest]

New pump in and I'm all fixed! yay