Rover 75 Cdt Ecu & Fuel Pumps

tony g · 11th January 2007, 21:07

Hi guy's, i think im getting somewhere with my wiring problem now, but does any one know if the ECU tell's the fuel pumps to work when the ign is turned on? the ECU is not getting the 12v it need's !! their is no voltage to the fuel pump's at all !! cheers. Tony.

mach1rob · 11th January 2007, 21:48

Hi Tony, glad to hear things are progressing

Looking at wiring diags, the pump gets it power from the relay in passenger fusebox, and fuse 10 and via the inertia switch.

tony g · 11th January 2007, 22:04

Hi thanks for that mach1rob, i was hoping it was from the ECU ? so it looks like it could be a bit more involved !!! still its gona be fun getting to the wires that run from the under bonnet fuse box !!!! i hope it stay's dry at the weekend ??

Roverron · 12th January 2007, 14:57

Quote:

Originally Posted by tony g

Hi guy's, i think im getting somewhere with my wiring problem now, but does any one know if the ECU tell's the fuel pumps to work when the ign is turned on? the ECU is not getting the 12v it need's !! their is no voltage to the fuel pump's at all !! cheers. Tony.

The pumps should come on for 20-60 seconds once the ignition is turned on.

Ron

andrewmsteve · 12th January 2007, 15:21

The fuel pump relay is controled by the ecu

tony g · 12th January 2007, 16:31

Thanks guys, that will explain why my pumps,ecu and sensors are not working, just got to find the dodgy wire or wires now ? im getting odd readings at the under bonnet fues box,3.5v i shud be getting 12v. thanks again. Tony.

sigor · 27th February 2007, 07:10

Hi Rover fans
I am new here and first sorry about my english, it is not very good.
I have problems with fuel pumps on my Rover 75 2.0 CDT. The under bonnet pump is very loud and in tank fuel pump doesn't work. Last week when i had just 10 - 15 litrs of fuel in tank engine started very hard, after 4 or 5 seconds. I filled the tank to the top and now engine starts OK. As i said, under bonnet pump now is loud. Maybe also this pump is going to fail.
I have one question: Is there just one relay for both pumps and one fuse for both pumps?

JohnFol · 27th February 2007, 08:05

Hi Sigor and welcome.

Yes there is 1 relay / fuse for both pumps.

A quick test is to lift the back seat, open the round lid and see if you get 12v to the pump. It is very common for the in-tank pump to fail.

JohnDotCom · 27th February 2007, 09:34

Signor. Welcome to the Club.

Wot If you have a MK2 Facelift there will only be the 1 pump though.

Roverron · 27th February 2007, 09:55

The Peugeot pump part no (from .org) is

9642124380

142 euros from

http://www.autoteile-shopping.de/default.asp?lang=en

This .org thread explains how to swap the pump over.

http://forums.mg-rover.org/showthrea...3849&page=5#83

Ron

11th January 2007, 21:07	#1
tony g Posted a thing or two MG ZT Join Date: Dec 2006 Location: cumbria Posts: 1,238 Thanks: 8 Thanked 43 Times in 24 Posts	Rover 75 Cdt Ecu & Fuel Pumps Hi guy's, i think im getting somewhere with my wiring problem now, but does any one know if the ECU tell's the fuel pumps to work when the ign is turned on? the ECU is not getting the 12v it need's !! their is no voltage to the fuel pump's at all !! cheers. Tony.

12th January 2007, 15:21	#5
andrewmsteve Regular poster Rover 75 Tourer Join Date: Nov 2006 Location: Llangollen north wales Posts: 84 Thanks: 2 Thanked 0 Times in 0 Posts	fuel pumps The fuel pump relay is controled by the ecu

27th February 2007, 09:55	#10
Roverron Gets stuck in Rover Join Date: Nov 2006 Location: Tarbert Posts: 980 Thanks: 0 Thanked 19 Times in 9 Posts	The Peugeot pump part no (from .org) is 9642124380 142 euros from http://www.autoteile-shopping.de/default.asp?lang=en This .org thread explains how to swap the pump over. http://forums.mg-rover.org/showthrea...3849&page=5#83 Ron __________________ [SIGPIC][/SIGPIC] Click to visit my website Ron on Twitter MyFacebook page Last edited by Roverron; 27th February 2007 at 09:58..

11th January 2007, 21:48	#2
mach1rob Gets stuck in Join Date: Jan 2007 Posts: 889 Thanks: 0 Thanked 1 Time in 1 Post	Hi Tony, glad to hear things are progressing Looking at wiring diags, the pump gets it power from the relay in passenger fusebox, and fuse 10 and via the inertia switch.

11th January 2007, 22:04	#3
tony g Posted a thing or two MG ZT Join Date: Dec 2006 Location: cumbria Posts: 1,238 Thanks: 8 Thanked 43 Times in 24 Posts	Hi thanks for that mach1rob, i was hoping it was from the ECU ? so it looks like it could be a bit more involved !!! still its gona be fun getting to the wires that run from the under bonnet fuse box !!!! i hope it stay's dry at the weekend ??

12th January 2007, 16:31	#6
tony g Posted a thing or two MG ZT Join Date: Dec 2006 Location: cumbria Posts: 1,238 Thanks: 8 Thanked 43 Times in 24 Posts	Thanks guys, that will explain why my pumps,ecu and sensors are not working, just got to find the dodgy wire or wires now ? im getting odd readings at the under bonnet fues box,3.5v i shud be getting 12v. thanks again. Tony.

27th February 2007, 07:10	#7
sigor Regular poster Rover 75 CDT Saloon Join Date: Nov 2006 Location: Maribor Posts: 59 Thanks: 1 Thanked 0 Times in 0 Posts	Hi Rover fans I am new here and first sorry about my english, it is not very good. I have problems with fuel pumps on my Rover 75 2.0 CDT. The under bonnet pump is very loud and in tank fuel pump doesn't work. Last week when i had just 10 - 15 litrs of fuel in tank engine started very hard, after 4 or 5 seconds. I filled the tank to the top and now engine starts OK. As i said, under bonnet pump now is loud. Maybe also this pump is going to fail. I have one question: Is there just one relay for both pumps and one fuse for both pumps?

27th February 2007, 08:05	#8
JohnFol Gets stuck in 75 Conn SE - XVWY* Join Date: Nov 2006 Location: Reading Posts: 564 Thanks: 0 Thanked 2 Times in 2 Posts	Hi Sigor and welcome. Yes there is 1 relay / fuse for both pumps. A quick test is to lift the back seat, open the round lid and see if you get 12v to the pump. It is very common for the in-tank pump to fail.

27th February 2007, 09:34	#9
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Signor. Welcome to the Club. Wot If you have a MK2 Facelift there will only be the 1 pump though.