Fuel pump relay

Any electrical issues

Re: Fuel pump relay

by Fraz » Sun Jan 13, 2013 12:11 pm

by pass the relay and run 12v to the pump .then see what happens...the fuel wont pump if the car don't start ...safety thing, so that way you can eliminate the fuel pump side of things
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Re: Fuel pump relay

by v6 steve » Sun Jan 13, 2013 12:57 pm

PS

ill ref :lol:
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Re: Fuel pump relay

by craigyboy » Sun Jan 13, 2013 5:31 pm

Fraz wrote:by pass the relay and run 12v to the pump .then see what happens...the fuel wont pump if the car don't start ...safety thing, so that way you can eliminate the fuel pump side of things



Ive bridged out the relays and can hear the pump running
I used to be able to hear a small buzzing noise under the
bonnet when the ignition was on.I wonder if this has anything
to do with it?
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Re: Fuel pump relay

by v6 steve » Sun Jan 13, 2013 6:02 pm

isnt the buzzing from the engine bat the tps setting up ?
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Re: Fuel pump relay

by Fraz » Sun Jan 13, 2013 6:09 pm

craigyboy wrote:
Fraz wrote:by pass the relay and run 12v to the pump .then see what happens...the fuel wont pump if the car don't start ...safety thing, so that way you can eliminate the fuel pump side of things



Ive bridged out the relays and can hear the pump running
I used to be able to hear a small buzzing noise under the
bonnet when the ignition was on.I wonder if this has anything
to do with it?



ut your still using the feeds at the relay by bridging them, I would try an direct 12V to the fuel pump feed and also another earth

other thing is it may well be the crank sensor...its a common problem with the ecotec
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Re: Fuel pump relay

by craigyboy » Sun Jan 13, 2013 6:13 pm

Ive always heard the buzzing noise with just the ignition
on and theres no management light on :think:
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Re: Fuel pump relay

by Fraz » Sun Jan 13, 2013 6:20 pm

craigyboy wrote:Ive always heard the buzzing noise with just the ignition
on and theres no management light on :think:



well if you have always herad it buzzing its nothing to do with that then
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Re: Fuel pump relay

by craigyboy » Sun Jan 13, 2013 6:33 pm

I dont hear it anymore ,so I was thinking whatever it
was is now knackered and not sending a feed to the
pump?
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Re: Fuel pump relay

by Callyman » Sun Jan 13, 2013 7:27 pm

craigyboy wrote:I was thinking whatever it
was is now knackered and not sending a feed to the
pump?



See below


Fraz wrote:by pass the relay and run 12v to the pump .then see what happens...the fuel wont pump if the car don't start ...safety thing, so that way you can eliminate the fuel pump side of things
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Re: Fuel pump relay

by craigyboy » Sat Jan 19, 2013 9:41 pm

Thanks a lot for poping up today and finding the fault
It was the feed to the ecu plug that had corroded and broke off
the pin and it also didnt help that I had replaced the fuel pump
with one that was worse :whistle: .so we changed it back to the
original one and got the car started.So i'll put the rest of it back
together tomorrow.
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Re: Fuel pump relay

by rich30mex » Sat Jan 19, 2013 9:58 pm

well do chaps
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Re: Fuel pump relay

by Fraz » Sun Jan 20, 2013 12:15 pm

he don't use it very often though so is it left outside or in a nice warm garage ?? could just be condensation over the years
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Re: Fuel pump relay

by v6 steve » Sun Jan 20, 2013 1:14 pm

Craig i did tell you you should always have a David in the tool box now i want him back lol


glad its all working
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Re: Fuel pump relay

by craigyboy » Sun Jan 20, 2013 4:29 pm

It was definetly a weird one,one pin corroded out of 55 :think:
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