Loss of power Rover 75 Cdti

72.boa · 6th April 2019, 08:36

Hi all,
I’ve searched the forum to find a solution to my loss of power problem without success. I hope I didn’t miss anything so I post this new thread.
As i said, I have got a power loss. When the car is cold, the tachometer pointer does not move while the engine seems to run normally. No fault anywhere showing on the dashboard. After a few minutes, the pointer goes up to 2000 RPM, no more. After reading some post here, I have cleaned the EGR valve but nothing changes. I also checked my fuses, swapped some of them, idem. I wonder if the valve Membrane is still doing the job but how to be sure? I removed the EGR valve and the air filter astarted the engine. Always the same symtoms. What is the next step now? MAF sensor, Intercooler seal, turbo hose?
Thank you for your help

ratchet · 6th April 2019, 10:28

Unplug the maf sensor and see if that makes any difference.

72.boa · 6th April 2019, 12:13

Hi Ratchet. Thank you very much for your help.
Bingo, it was the maf sensor. Actually, I thought this sensor was next to the EGR Valve. Is it fixable or do I need to buy a new one? Does it require the T4?

champagne_charly · 6th April 2019, 12:30

You can drive without it connected with no adverse effect other than a cloud of smoke on heavy throttle. Ive did this on all three of mine and MPG still ok. Of course best to change or upgrade. Make sure your air and pcv filters are changed i read that lack of maintenance in either or both can lead to failure of maf.

72.boa · 6th April 2019, 12:43

I’ve planned to change the air and Pcv filter as well as the EGR hoses which are a bit damaged. I now have a clean EGR valve. I will probably buy a new Maf sensor. I’ve found some at 30£ in a famous online shop. Do you think it is a good stuff?

Number 6 · 6th April 2019, 13:39

Quote:

Originally Posted by 72.boa

I’ve planned to change the air and Pcv filter as well as the EGR hoses which are a bit damaged. I now have a clean EGR valve. I will probably buy a new Maf sensor. I’ve found some at 30£ in a famous online shop. Do you think it is a good stuff?

To be honest with you,You will be far better off buying a genuine Bosch Maf sensor than a cheap Chinese knock off.The cheap one either dont work or go out of spec very quickly.

Do a search on here for the Bosch Maf and all will be revealed

slovcan · 6th April 2019, 14:02

Maybe take out your existing MAF sensor and clean it first. That might be all it needs.

72.boa · 6th April 2019, 14:12

Thank you for your advices. I’ll try to clean it first and buy a Bosch if it still fails

champagne_charly · 6th April 2019, 14:47

RE chinese knock off maffs.. i can second that. bought one and car ran better without. in fact it was barely different to running with the faulty one.

markypicks · 6th April 2019, 18:31

clean it with proper maf cleaner dont forget dont touch anything inside it ie the little needle etc make sure its nice and dry before you reconnect rgds mark

6th April 2019, 08:36	#1
72.boa Newbie Rover 75 mk2 Join Date: Apr 2019 Location: gravelines Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Loss of power Rover 75 Cdti Hi all, I’ve searched the forum to find a solution to my loss of power problem without success. I hope I didn’t miss anything so I post this new thread. As i said, I have got a power loss. When the car is cold, the tachometer pointer does not move while the engine seems to run normally. No fault anywhere showing on the dashboard. After a few minutes, the pointer goes up to 2000 RPM, no more. After reading some post here, I have cleaned the EGR valve but nothing changes. I also checked my fuses, swapped some of them, idem. I wonder if the valve Membrane is still doing the job but how to be sure? I removed the EGR valve and the air filter astarted the engine. Always the same symtoms. What is the next step now? MAF sensor, Intercooler seal, turbo hose? Thank you for your help

6th April 2019, 14:02	#7
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	Maybe take out your existing MAF sensor and clean it first. That might be all it needs. __________________ 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

6th April 2019, 10:28	#2
ratchet Posted a thing or two ZT-T + CTDI Join Date: Oct 2014 Location: Gone walkabout Posts: 1,185 Thanks: 179 Thanked 361 Times in 289 Posts	Unplug the maf sensor and see if that makes any difference.

6th April 2019, 12:13	#3
72.boa Newbie Rover 75 mk2 Join Date: Apr 2019 Location: gravelines Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Hi Ratchet. Thank you very much for your help. Bingo, it was the maf sensor. Actually, I thought this sensor was next to the EGR Valve. Is it fixable or do I need to buy a new one? Does it require the T4?

6th April 2019, 12:30	#4
champagne_charly Regular poster 75 tourer Join Date: May 2008 Location: Sidcup Posts: 33 Thanks: 10 Thanked 0 Times in 0 Posts	You can drive without it connected with no adverse effect other than a cloud of smoke on heavy throttle. Ive did this on all three of mine and MPG still ok. Of course best to change or upgrade. Make sure your air and pcv filters are changed i read that lack of maintenance in either or both can lead to failure of maf.

6th April 2019, 12:43	#5
72.boa Newbie Rover 75 mk2 Join Date: Apr 2019 Location: gravelines Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	I’ve planned to change the air and Pcv filter as well as the EGR hoses which are a bit damaged. I now have a clean EGR valve. I will probably buy a new Maf sensor. I’ve found some at 30£ in a famous online shop. Do you think it is a good stuff?

6th April 2019, 14:12	#8
72.boa Newbie Rover 75 mk2 Join Date: Apr 2019 Location: gravelines Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Thank you for your advices. I’ll try to clean it first and buy a Bosch if it still fails

6th April 2019, 14:47	#9
champagne_charly Regular poster 75 tourer Join Date: May 2008 Location: Sidcup Posts: 33 Thanks: 10 Thanked 0 Times in 0 Posts	RE chinese knock off maffs.. i can second that. bought one and car ran better without. in fact it was barely different to running with the faulty one.

6th April 2019, 18:31	#10
markypicks Gets stuck in rover 75 saloon cdt club se re map 160 bhp Join Date: Dec 2018 Location: sheffield Posts: 558 Thanks: 227 Thanked 169 Times in 135 Posts	clean it with proper maf cleaner dont forget dont touch anything inside it ie the little needle etc make sure its nice and dry before you reconnect rgds mark