1999 V6 fuel pump

timon · 10th April 2019, 07:42

Just after passing MOT with nothing but a minor repair on the brake lines, my car died on the motorway. The Dutch equivalent of the AA came along and after running some tests they came to the conclusion that the in tank fuel pump is dead. Went to take a look yesterday and it turns out I've got the one with part number WFX100922 which is no longer available anywhere. I don't want to get a used one as a replacement as it'll leave me stranded again sooner or later. Anyone has had the same experience and maybe a solution ?

vitesse · 10th April 2019, 07:55

Fuel pumps are generally said to be very reliable. Before replacing I’d test it myself - take the multi-plug off the pump connector and apply power directly to the pump: minus to black, plus to white/purple - does it run?

Regards

slovcan · 10th April 2019, 14:16

Could this be an FOC (Fabled Orange Clip) situation?

vitesse · 10th April 2019, 14:39

Think the early cars were immune as the filters couldn't be changed, clip needed post 2002 roughly.

Regards

timon · 10th April 2019, 18:29

Thanks for the replies guys.

After work I wired a random pump from another car to the car's pump connector and that one started up right away. I took the 75's sending unit with the pump out of the tank and cleaned the connectors on the pump but that didn't help so that's going into the bin.

With the unit out of the tank, disassembling it was easy and I found a pump on Ebay:
https://www.ebay.co.uk/itm/ELECTRIC-...oAAOSwatda4yk3

So I think I'm going to order it there, unless someone knows a better place to get one?

Another question. I had to cut the plastic fuel hose on the pump. Will a rubber fuel hose survive in the tank?

vitesse · 10th April 2019, 20:13

So just to be clear did you ever try connecting minus to black, plus to white/purple and see if the pump ran?

There's a reason why they use plastic rather than fake rubber ones as the "rubber" can sometimes disintegrate into a gooey mess. Test a section of your rubber fuel hose in a (petrol filled) jam jar for a week first, to see if there's evidence of de-lamination etc. I've seen some horrible examples of "quality fuel hose".

Good luck

timon · 11th April 2019, 06:08

Quote:

Originally Posted by vitesse

So just to be clear did you ever try connecting minus to black, plus to white/purple and see if the pump ran?

There's a reason why they use plastic rather than fake rubber ones as the "rubber" can sometimes disintegrate into a gooey mess. Test a section of your rubber fuel hose in a (petrol filled) jam jar for a week first, to see if there's evidence of de-lamination etc. I've seen some horrible examples of "quality fuel hose".

Good luck

Yes that's what I did, with the faulty pump and with another one. The other one worked immediately at the turnover of the key.

Given your comment about the dissolved hoses, it's probably best to look for a plastic replacement.

10th April 2019, 07:42	#1
timon Avid contributor Rover 75 Saloon Join Date: Dec 2018 Location: Rotterdam Posts: 145 Thanks: 15 Thanked 25 Times in 22 Posts	1999 V6 fuel pump Just after passing MOT with nothing but a minor repair on the brake lines, my car died on the motorway. The Dutch equivalent of the AA came along and after running some tests they came to the conclusion that the in tank fuel pump is dead. Went to take a look yesterday and it turns out I've got the one with part number WFX100922 which is no longer available anywhere. I don't want to get a used one as a replacement as it'll leave me stranded again sooner or later. Anyone has had the same experience and maybe a solution ?

10th April 2019, 14:16	#3
slovcan Gets stuck in 75 Tourer CDT MK2 manual in Glorious Grey Join Date: Jan 2018 Location: Slovakia Posts: 987 Thanks: 926 Thanked 346 Times in 252 Posts	Could this be an FOC (Fabled Orange Clip) situation? __________________ Southern Slovakia Anything can happen in Formula 1 and usually does - Murray Walker 1999 Triumph Trophy 900, Saddlesore 1600, Iron Butt Riders Association #63720 2005 Rover 75 CDT Tourer MK2

10th April 2019, 20:13	#6
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,533 Thanks: 395 Thanked 823 Times in 652 Posts	So just to be clear did you ever try connecting minus to black, plus to white/purple and see if the pump ran? There's a reason why they use plastic rather than fake rubber ones as the "rubber" can sometimes disintegrate into a gooey mess. Test a section of your rubber fuel hose in a (petrol filled) jam jar for a week first, to see if there's evidence of de-lamination etc. I've seen some horrible examples of "quality fuel hose". Good luck Last edited by vitesse; 10th April 2019 at 20:41.. Reason: added petrol filled

10th April 2019, 07:55	#2
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,533 Thanks: 395 Thanked 823 Times in 652 Posts	Fuel pumps are generally said to be very reliable. Before replacing I’d test it myself - take the multi-plug off the pump connector and apply power directly to the pump: minus to black, plus to white/purple - does it run? Regards

10th April 2019, 14:39	#4
vitesse I really should get out more....... Rover 75 Saloon Join Date: Jul 2011 Location: Gävle Posts: 2,533 Thanks: 395 Thanked 823 Times in 652 Posts	Think the early cars were immune as the filters couldn't be changed, clip needed post 2002 roughly. Regards

10th April 2019, 18:29	#5
timon Avid contributor Rover 75 Saloon Join Date: Dec 2018 Location: Rotterdam Posts: 145 Thanks: 15 Thanked 25 Times in 22 Posts	Thanks for the replies guys. After work I wired a random pump from another car to the car's pump connector and that one started up right away. I took the 75's sending unit with the pump out of the tank and cleaned the connectors on the pump but that didn't help so that's going into the bin. With the unit out of the tank, disassembling it was easy and I found a pump on Ebay: https://www.ebay.co.uk/itm/ELECTRIC-...oAAOSwatda4yk3 So I think I'm going to order it there, unless someone knows a better place to get one? Another question. I had to cut the plastic fuel hose on the pump. Will a rubber fuel hose survive in the tank?