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Three fuel pumps in two months

miss_trucka

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92 Vp commodore.

Ive blown three fuel pumps in two months. does anyone have any idea why?
thanks :hmmm:
 

Smitty

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replace the relay.....
 

miss_trucka

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We've swapped the relays around with ones that i know arent faulty.
Does anyone know the correct voltage that should be going to the pump? So i can put the multimeter on it
 

vn_wagon90

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Just throwing it out there, cause you never know , By chance have you changed the fuel filter and blown the lines out. Just in case the pump has let go letting chunks go through the system.
 

miss_trucka

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Ive done a complete filter service on it 4 weeks ago. I was driving it and it just cut out, exactly how it did when it died on me 2 weeks ago. I cant hear the pump either. Im also not getting any fuel out of my line. So its a pretty good indicator that the pump is gone. I cant smell fuel, so i dont think any of my lines have blown off
 

markovr

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are you sure its the pump and not a broken rubber return line inside the tank causing the pump not to pick up fuel when it gets to about a quarter ?Happenned to me and when I changed the pump I had to prime the lines on the steel line under the bonnet for it to pump fuel also a new pump doesnt make as much noise as a old one so you really have to listen to hear it prime for the few seconds when you first hit the key
 

miss_trucka

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The return line was perished when i replaced the first pump. I was told it wouldnt have an affect on the car. It would make sense though, i never run the car under quarter but it seems to splutter when it gets to quarter.
 

markovr

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it will affect the car big time especially when the tank gets low and you go around a corner...that hose returns fuel to the pot that the pump pickup sits in and as the fuel returns it pulls more fuel from inside the tank to keep the pot full enough for the pickup to get the liquid fuel the pump needs to keep pumping.
To test you need to take the rubber line off between the gauge unit that goes to the filter and put it into a bucket and turn the key on( but not to start) and see if the pump primes and pumps some fuel for the couple of seconds it is supposed to.
 

miss_trucka

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thanks mate, thats bloody brilliant advice. Id never heard that. even from all the mechanics i spoke too!
Any idea where to buy that line from? or can i just use normal fuel line?
 

markovr

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holden sell it as a spare part......part number 92047898 complete with quick release connector ...drama is its inside the tank but you can get it take off old hose using some different techniques and replace it yourself..... if youre game.... heres a thread about it
you cant use normal fuel line.... it will stuff up ........you need submersible fuel hose
voltage across purple and black wires in white pump connector should be your cars normal battery voltage (around 12v)
 
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