The Old Fuel Pump Relay

[Malcster]

As part of a yearly service, I was planning on replacing my 2 fuel pump relays, and keeping the 2 (currently working) ones as spares in the boot.

Anyway, simple question was - where is the best place to get these?
I have read previously posts about Euro Car Parts etc, but none of them seem to do the right relay any more.

I was thinking of just going for this in the end...

http://www.thetvrshop.com/TVR/Parts_details/TVR%20...

Anyone found it elsewhere, cheaper?

Cheers,

Malc

[BIGMIKE1]

I got mine from euro car parts last year, a mate worked there so I just gave him the Bosch number and he ordered me 2. They came as the newer brown plastic ones but same part number as the earlier metal ones. Two cost me £14.40 incl Vat but that was with his discount. The part number on there invoice is 450220610 which I think is differnt to the Bosch one, so either just give them the Bosch number or this number and they should be able to get them.
Hope this helps
Mike

[Malcster]

Ahh, superb - thanks for that.
Are the plastic covered ones exactly the same as the old metal ones?

I guess if the BOSCH part number is the same, then they should match...
Looks like they are £10 devlivered - not too bad:
http://www.eurocarparts.com/search/450220610/p/hom...

[tonys]

As a routine replacement, I changed both a few months ago, sourced from one of the local motor factors. Bosch parts (now plastic coated) - just quoted the Bosch part nos.. They were approx £8 each incl. vat. but I can't recall exact price and it's too comfy sat in front of the fire to go and dig out the receipt

Not all stock them, including the local Land Rover specialist, which seemed strange. Straightforward job to change.

[Naybr]

I'd heard that the original ones had a diode inside to prevent power draining though them when off. Might be worth checking that afermarket ones also have this feature ..?

Good idea to do a precautionary change, or at least carry a spare though.

[Mark.]

Yep the new ones have the diode. Just replaced mine (about £8). Though the Op says replacing both as my understanding is one is the fuel pump and the other the ECU.

[scotty_d]

Naybr said:

I'd heard that the original ones had a diode inside to prevent power draining though them when off. Might be worth checking that afermarket ones also have this feature ..?

Good idea to do a precautionary change, or at least carry a spare though.

This is true about the Diode, but i did run normal relays for years with no ill effects as well.

[tonys]

Mark. said:

Yep the new ones have the diode. Just replaced mine (about £8). Though the Op says replacing both as my understanding is one is the fuel pump and the other the ECU.

Correct; I assumed that was what the OP actualy meant.

[BliarOut]

Mark. said:

Yep the new ones have the diode. Just replaced mine (about £8). Though the Op says replacing both as my understanding is one is the fuel pump and the other the ECU.

I *think* they're wired in a self latching configuration so if either fails you'll be stranded. I stand to be corrected about that mind

[Ant.]

One relay is the "main" relay, controlled by the ECU, it powers Lambda's,Injectors etc.
The other is the fuel pump relay,again controlled by the ECU, it errr powers the Fuel Pump.

If either fails you are walking.....

[Malcster]

Ant. said:

If either fails you are walking.....

Yep - that's what I'd heard.

Cheers for all the info lads.
Was planning on replacing both with spanky new plastic ones, and keeping the older metal ones as spares in the boot.

Be pretty annoying to be left stranded, the thought of an expensive tow truck, the hassles in general etc etc for the sake of a £10 relay.

[Ant.]

Malcster said:

Yep - that's what I'd heard.

Cheers for all the info lads.
Was planning on replacing both with spanky new plastic ones, and keeping the older metal ones as spares in the boot.

Be pretty annoying to be left stranded, the thought of an expensive tow truck, the hassles in general etc etc for the sake of a £10 relay.

If you know the relay blocks, and have some wire you wouldnt be stranded.

I would leave the original ones where they are, and put the new spares in the glove box. If it aint broke....

[quattrophenia]

Mine failed last year, firstly pulling onto the motorway in heavy traffic and secondly as I was coming in to a town centre with a police car coming round the corner as I quickly pull off the main road! Of course to him it looked like I clapped eyes on the cop car and swerved off the road to avoid him. Not suprisingly he was straight round the round-a-bout and pulled down the side street next to me to see what I was up to.
"Got a problem sir"
No just the relay I think
"Breaking down all the time is it sir"
No, never let me down till today - actually!
"Good luck sir"
and off he tootled.
picked up the fuel pump relay and immobiliser relay for £25.
Just make sure it's the relay with the red line through otherwise the standard one keeps the circuit open and kills the battery indeffinitely.
If in doubt buy from a known TVR parts supplier.

[nawarne]

Ant. said:

Malcster said:

Yep - that's what I'd heard.

Cheers for all the info lads.
Was planning on replacing both with spanky new plastic ones, and keeping the older metal ones as spares in the boot.

Be pretty annoying to be left stranded, the thought of an expensive tow truck, the hassles in general etc etc for the sake of a £10 relay.

If you know the relay blocks, and have some wire you wouldnt be stranded.

I would leave the original ones where they are, and put the new spares in the glove box. If it aint broke....

Agreed!

As a 'get you home' you could of course 'jump' the power slots.....energising the circuits mentioned above and you'd have electrickery going to ecu/pimp etc. Just remember to remove the jump wires when you get home!!
Nick

[Malcster]

Ant. said:

I would leave the original ones where they are, and put the new spares in the glove box. If it aint broke....

You think it's worth just waiting for the inevitble to happen?

I have heard its only a matter of time, and that you should really change them every few years?

Also, these new plastic coated ones have no red stripe on them I dont think? But they do have the same part number. Reckon they are the correct ones? I'd guess it'll be fine if the part numbers match...

[BIGMIKE1]

The newer brown plastic ones have been working fine on my since last summer, they're the same relay just the later design. I also changed mine as a precaution before they failed and just keep the old ones in the boot as a just incase!