Diesel woes... Advice welcome

mirage110 · 8th April 2020, 15:36

Hi all....... ok heres my problem, car started playing up about 4 months ago would sometimes fire straight up, other times would take 5-6 attempts, with no running issues once started........

Slowly over time it did get harder to start, then one day no matter how much cranking she just wouldnt fire up.

parked up and left, luckily ive another daily so it sat on my drive until now.

First thing i noticed was no noise from either fuel pump, so i ordered a new in tank pump, on reading the excellent how to on here fitted it and hey presto turned the key to pos 2 and heard both pumps prime for about 30 seconds, car started first turn and ran for about 10 seconds, then suddenly stopped, so i turned off ignition and turned to pos 2 again this time no prime but the fan came on full speed for appox 5 seconds and no matter how many times i try the old girl is just turning over and wont start, cant here the pumps either.....

I am now rather stumped?? any advice guys, thanks Nick.

Geoff130 · 8th April 2020, 16:27

I had all sorts of issues with mine occasionally not starting , unplugged the MAF and thought i'd cured it but in the end it was the fuel pump relay in the glove box. Might be worth a try.

mirage110 · 8th April 2020, 16:38

Quote:

Originally Posted by Geoff130

I had all sorts of issues with mine occasionally not starting , unplugged the MAF and thought i'd cured it but in the end it was the fuel pump relay in the glove box. Might be worth a try.

another one to try, guessing it could be loose?.

myfirstrover · 8th April 2020, 17:17

Just to be on the safe side , check the ECU isn't swimming in water .

RoverP480 · 8th April 2020, 17:29

Not sure relevant this is, but my Rover 45 had the same symptoms and it turned out to be corroded/ broken wire feeding the coil in main power relay to the engine management ECU so injectors not working. Just suggesting don't discount a wiring issue.

sworks · 8th April 2020, 18:08

Have a search for injector leak back and cam sensor issues

markypicks · 8th April 2020, 18:39

sounds to me like an ecu problem i would suggest to pm one of the t4 guys on here . if your plenums have been blocked the ecu would have taken a bath have a look see if the pollen filter has got any tide marks on it rgds mark

mirage110 · 8th April 2020, 19:40

thanks guys for all your advice..... if it was the ecu would it not start, as it was running but then cut out?....... changing the in tank pump seemed to of solved the issue for all of 10 seconds

trikey · 8th April 2020, 19:51

Quote:

Originally Posted by mirage110

thanks guys for all your advice..... if it was the ecu would it not start, as it was running but then cut out?....... changing the in tank pump seemed to of solved the issue for all of 10 seconds

The fuel pump drivers are on the bottom of the ecu, if it gets wet these are the first thing to bite the bullet.

I would drop Brian or Russ a PM if I were you, they can check your ecu and supply a replacement if yours is goosed.

8th April 2020, 15:36	#1
mirage110 Regular poster mg zt diesel, mg ztt 190se Join Date: Apr 2015 Location: leicester Posts: 65 Thanks: 49 Thanked 12 Times in 7 Posts	Diesel woes... Advice welcome Hi all....... ok heres my problem, car started playing up about 4 months ago would sometimes fire straight up, other times would take 5-6 attempts, with no running issues once started........ Slowly over time it did get harder to start, then one day no matter how much cranking she just wouldnt fire up. parked up and left, luckily ive another daily so it sat on my drive until now. First thing i noticed was no noise from either fuel pump, so i ordered a new in tank pump, on reading the excellent how to on here fitted it and hey presto turned the key to pos 2 and heard both pumps prime for about 30 seconds, car started first turn and ran for about 10 seconds, then suddenly stopped, so i turned off ignition and turned to pos 2 again this time no prime but the fan came on full speed for appox 5 seconds and no matter how many times i try the old girl is just turning over and wont start, cant here the pumps either..... I am now rather stumped?? any advice guys, thanks Nick.

8th April 2020, 18:08	#6
sworks Been absent for a while… Rover 75 Tourer, Classic mini Cooper S, Abarth 595 competizione, MG TF and a Hyundai Tucson PHEV Join Date: Feb 2007 Location: Cumbria Posts: 13,065 Thanks: 1,033 Thanked 1,686 Times in 1,040 Posts	Have a search for injector leak back and cam sensor issues __________________ ................................................. 'Marmite' Possibly one of the most famous 75 tourers produced! left the production line as the last of only Three Rover 75 tourers produced in Trophy Yellow. 48 hours later Longbridge closed. The last sold ordered 75 Tourer. Paid for by the Phoenix Four and handed over by John Towers to the Warwickshire Northampton Air ambulance service as a Rapid Response vehicle

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8th April 2020, 16:27	#2
Geoff130 Loves to post MG ZT 190, Rover 75 CDTi, Honda VFR 750, Honda CB550F Join Date: Aug 2010 Location: Derby Posts: 393 Thanks: 75 Thanked 36 Times in 28 Posts	I had all sorts of issues with mine occasionally not starting , unplugged the MAF and thought i'd cured it but in the end it was the fuel pump relay in the glove box. Might be worth a try.

8th April 2020, 17:17	#4
myfirstrover Posted a thing or two Rover 75 2.0 cdi Join Date: Mar 2011 Location: Newcastle upon Tyne Posts: 1,896 Thanks: 401 Thanked 448 Times in 303 Posts	Just to be on the safe side , check the ECU isn't swimming in water .

8th April 2020, 17:29	#5
RoverP480 Gets stuck in None at the moment Join Date: Jan 2018 Location: Hereford Posts: 501 Thanks: 1 Thanked 165 Times in 146 Posts	Not sure relevant this is, but my Rover 45 had the same symptoms and it turned out to be corroded/ broken wire feeding the coil in main power relay to the engine management ECU so injectors not working. Just suggesting don't discount a wiring issue.

8th April 2020, 18:39	#7
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	sounds to me like an ecu problem i would suggest to pm one of the t4 guys on here . if your plenums have been blocked the ecu would have taken a bath have a look see if the pollen filter has got any tide marks on it rgds mark

8th April 2020, 19:40	#8
mirage110 Regular poster mg zt diesel, mg ztt 190se Join Date: Apr 2015 Location: leicester Posts: 65 Thanks: 49 Thanked 12 Times in 7 Posts	thanks guys for all your advice..... if it was the ecu would it not start, as it was running but then cut out?....... changing the in tank pump seemed to of solved the issue for all of 10 seconds