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[terry paget]

How much bother would this be to fit after removing the cover plate and big plastic sealing ring?

https://www.worldcarparts.co.uk/fuel-pump-for-vauxhall-astra-corsa-vectra-carlton-cavalier-omega-zafira

It's no different to fitting a traditional electric fuel pump.


The 'hard' part is undoing the plastic locking ring to remove the pump/float assembly.

Yeah, I've done a few of them and can vouch for that. Was thinking of trying to make a tool of sorts to grab either side of the ring. Maybe an old pair of garden shears with a few angle grinder alterations.

However, Terry's comments on weak fuel pumps are interesting.

Gonna change the filter, get the wife to turn the ignition on to see what kind of pressure the fuel pump is giving and go from there.

Easier way of checking fuel feed is to put right foot hard down at 20mph on a straight empty road. If engine does not cut out within 40 second fuel feed is good.

[berserkerboy]

How much bother would this be to fit after removing the cover plate and big plastic sealing ring?

https://www.worldcarparts.co.uk/fuel-pump-for-vauxhall-astra-corsa-vectra-carlton-cavalier-omega-zafira

It's no different to fitting a traditional electric fuel pump.


The 'hard' part is undoing the plastic locking ring to remove the pump/float assembly.

Yeah, I've done a few of them and can vouch for that. Was thinking of trying to make a tool of sorts to grab either side of the ring. Maybe an old pair of garden shears with a few angle grinder alterations.

However, Terry's comments on weak fuel pumps are interesting.

Gonna change the filter, get the wife to turn the ignition on to see what kind of pressure the fuel pump is giving and go from there.

Filter done. Not too bad a job with the cable clip pliers. Car definately running better, nice smooth tickover with no variation in revs like it used to. Hope this is the cure...Time will tell 

[berserkerboy]

Nope! Car wouldn't start today. Fuel pump not working. Car fired up with easy start after the air filter and then conked out. Put 12v to the pump from the battery, no noise. Am ordering one

[TheBoy]

Make sure you have a spare top bit for the tank, as the pipes can be quite rusty, and can fail when messed about with.

[berserkerboy]

Yep, had that before. Present car doesn't look too bad.

[berserkerboy]

New pump hasn't solved this. When I turn ignition on there is briefly 12v at external connector for the pump which then dies away. Pump is not pumping at all. I can hard start on gas but when I try to turn back to petrol the stag system will not allow it.
Presumably, the fact that the car starts on gas rules out crank sensor?
The pump fuse is fine.

[Doctor Gollum]

Easy start won't have helped... Change the two purple relays, put three gallons more fuel in and report back.

[berserkerboy]

Do you mean the purple 80a fuses on top of the battery? I have checked these for continuity and they are fine. Petrol tank is 3/8 full and car is on the flat. Will the extra fuel help?

[Doctor Gollum]

Do you mean the purple 80a fuses on top of the battery? I have checked these for continuity and they are fine. Petrol tank is 3/8 full and car is on the flat. Will the extra fuel help?

I believe that I meant the purple RELAYS...

3/8 should be enough, but adding more will rule it out... Just because the pump runs, it doesn't mean that it's drawing fuel. 

Actually you only need to swap out the injector relay as the fuel pump one clearly works... Swap them over and see if the pump still runs when ignition first switched on... If it does, both relays are fine and you need to add more fuel. If the pump doesn't prime then you've found your problem

[berserkerboy]

Oops! Sorry. . Where is best place to get replacements. GM?

[Doctor Gollum]

Yup, but re read and digest the whole post... Might be you don't need it...

One relay powers the pump, tother the injectors

[berserkerboy]

So is it right that you get 12v on turning on the ignition which then reduces almost immediately?

[berserkerboy]

Will swap them over and report back.

[berserkerboy]

Both behaving the same 12v down to zero.

[berserkerboy]

Put more fuel in. 1/2 full. Still no joy. Damn! Car not starting on gas now. Had enough for today. Battery on charge. Hope to get it started tomorrow but think this car is trying to tell me something.