Diesel Taking a Long Time to Start and Cuts Out - Page 5

TriumphStag · 16th April 2021, 10:20

Quote:

Originally Posted by Mike Noc

You really need to look at the live data LP and HP fuel pressures with the engine running. If they both check out then it might be a case of carefully checking all the control wiiring and plugs. Has the ECM been swapped or tested if only to rule it out?

Thanks, is there any way to check the pressures with TOAF - I have tried and cannot see any way to read live data? My iCarSoft does every make of vehicle except Rover and only manages to detect 2 or 3 BMW modules.

All the wiring and plugs look good, all connections are seated well and there is no obvious damage to any of the wiring.

The ECU went off to Russ for the 160 remap (important things first

) so I am assuming if there were any major faults with it these would have been picked up at that point.

Is it safe to swap the ECU's over between the two cars (the red one is a Mk2 and the Silver one is a Mk1 - both are CDTi's)?

Mike Noc · 16th April 2021, 18:08

Sorry I don't use TOAF so can't help you there. You can't just swap the ECM over as it is coded for security. Was this happening before the ECM was sent off to Russ? If not then it is possible a fault developed after it was remapped and since it has been re-installed back in the car.

Phil MG · 16th April 2021, 20:08

Just been reading your thread,

Have you changed the fuel filter?

TriumphStag · 17th April 2021, 08:08

Quote:

Originally Posted by Mike Noc

Sorry I don't use TOAF so can't help you there. You can't just swap the ECM over as it is coded for security. Was this happening before the ECM was sent off to Russ? If not then it is possible a fault developed after it was remapped and since it has been re-installed back in the car.

Hi, Yes, was happening before the ECU was sent off.

TriumphStag · 17th April 2021, 08:09

Quote:

Originally Posted by Phil MG

Just been reading your thread,

Have you changed the fuel filter?

Yes. And the PCV filter, and the air filter (whilst I had it apart).

Mike Noc · 17th April 2021, 08:51

Worth carefully inspecting the wiring from under the engine bay fusebox back to the ECM - not unknown for cables to get damaged in the inner wing area.

TriumphStag · 1st May 2021, 08:57

Well, this rumbles on, checked all the wiring again, all still looks fine, so decided I would take it to see Jamie.

Sadly the car has decided it doesn't want to go anywhere at the moment by failing it's MOT quite comprehensively....

Guess I will be focussing on that for the next few days..... Nothing there I can't fix, just time.....

TriumphStag · 19th May 2021, 17:33

So, some excellent news on this.

I got it through the MOT (all fails and advisories now fixed), and have been up to see Jamie to work his T4 magic. Turns out there was a fault code showing for the cam position sensor, which I could not see in TOAF.

I thought it strange that there was a code for the cam sensor as I have replaced that.

Anyway, now have it home, and have access to another 75 and have swapped cam sensors between the cars.... and .... the problem moved with the cam sensor.... So a new one is now on order.

Moral of the story.... even if you have replaced a part with a new one, do not assume that it is NOT faulty. I had replaced the cam sensor previously but obviously there is a problem with the replacement as well. Grrrrr.

COLVERT · 19th May 2021, 19:37

All's well that ends well.---I can imagine your sense of relief now this saga is over.---Well done for the persistence.---

Mike Noc · 19th May 2021, 21:04

Good to get a result with the starting problem. You mentioned cutting out earlier - did you find the reason for that or did it clear up by itself?

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16th April 2021, 18:08	#42
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,547 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Sorry I don't use TOAF so can't help you there. You can't just swap the ECM over as it is coded for security. Was this happening before the ECM was sent off to Russ? If not then it is possible a fault developed after it was remapped and since it has been re-installed back in the car.

16th April 2021, 20:08	#43
Phil MG Regular poster MG ZT Join Date: Dec 2020 Location: West Heath,Birmingham Posts: 67 Thanks: 28 Thanked 8 Times in 6 Posts	Just been reading your thread, Have you changed the fuel filter?

17th April 2021, 08:51	#46
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,547 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Worth carefully inspecting the wiring from under the engine bay fusebox back to the ECM - not unknown for cables to get damaged in the inner wing area.

19th May 2021, 17:33	#48
TriumphStag Gets stuck in MK1 Connie SE 2.0CDTi Tourer Join Date: Mar 2012 Location: Crawley Posts: 635 Thanks: 39 Thanked 79 Times in 52 Posts	So, some excellent news on this. I got it through the MOT (all fails and advisories now fixed), and have been up to see Jamie to work his T4 magic. Turns out there was a fault code showing for the cam position sensor, which I could not see in TOAF. I thought it strange that there was a code for the cam sensor as I have replaced that. Anyway, now have it home, and have access to another 75 and have swapped cam sensors between the cars.... and .... the problem moved with the cam sensor.... So a new one is now on order. Moral of the story.... even if you have replaced a part with a new one, do not assume that it is NOT faulty. I had replaced the cam sensor previously but obviously there is a problem with the replacement as well. Grrrrr.

19th May 2021, 19:37	#49
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	All's well that ends well.---I can imagine your sense of relief now this saga is over.---Well done for the persistence.---

19th May 2021, 21:04	#50
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,547 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Good to get a result with the starting problem. You mentioned cutting out earlier - did you find the reason for that or did it clear up by itself?