Range rover classic fuel pump probem

[roy69]

Hi all, got a 1991 3.9 classic project. It's quite tidy but not been running for2 years. Turns over and got a spark but no fuel coming through. Put a tester on the wires just above the pump and got a reading of 3.8v off the one with a purple stripe on. No noise from the pump so was wondering if it's no power getting to it or if it has seized. Any ideas welcomed

 

[cooltide]

Check the earth, it should be getting 12v. test voltage ignition on and when cranking. It should prime for 2 seconds when ignition is turned on.

 

[cooltide]

Oh and welcome

 

[jamesmartin]

fuel pump is supplied from a relay under drivers seat you can tell as it has a white and purple wire ,the other relay with brown wires supplies the power to it and ecu when you switch ignition on both relays should click then fuel pump relay click off 4 seconds later ,it comes back on when you crank engine

 

[roy69]

I will have another look at it.
Thanks

 

[roy69]

fuel pump is supplied from a relay under drivers seat you can tell as it has a white and purple wire ,the other relay with brown wires supplies the power to it and ecu when you switch ignition on both relays should click then fuel pump relay click off 4 seconds later ,it comes back on when you crank engine

Cheers for the info, I will have a go at that and see what happens.
Thanks

 

[roy69]

Relays work and I get 12 volts at the pump for 1 or 2 seconds. Still no noise from the pump. Is the pump serviceable or do I need to get another one.
Thanks

 

[cooltide]

It should prime with 12v for a couple of seconds and stop. Then 12v to run it when you engage starter. Have you tried using a farmer's socket set?

 

[roy69]

My mate was turning the ignition on while I was hitting it with a hammer

 

[roy69]

Do I need a bigger hammer?

 

[jamesmartin]

if your getting power to the pump when relays click,you need a new pump

 

[cooltide]

Defibrillator maybe

 

[roy69]

Just to be sure, would I hear the pump if it was working?

 

[jamesmartin]

you would with your ear to the filler

 

[cooltide]

Yes, you'd hear it from drivers seat when it primes, but engine idling is louder.

 

[roy69]

Looks like I will be getting a new pump then.
Late Xmas present

 

[roy69]

Would it be best to drain the tank or could I just disconnect the battery?
Thanks

 

[jamesmartin]

have you got a hole in the boot floor for access to the pump

 

[roy69]

Yes

 

[jamesmartin]

no need to drain the tank or undo battery lead as long as ignition is off