Mk1 CDT won't start update - Page 3

Cantray · 7th March 2021, 16:42

Yes I think that's where this is heading. Before that quite keen to try TOAF now that I have downloaded it onto an old laptop. Unless someone tells me I'm daft.

75driver · 7th March 2021, 17:36

Quote:

Originally Posted by Cantray

Yes I think that's where this is heading. Before that quite keen to try TOAF now that I have downloaded it onto an old laptop. Unless someone tells me I'm daft.

Just be wary when using TOAF. Make a backup of all modules before you do anything else.
However, as it’s a possibility that your ECM may have lost its pairing with the LCM / immobiliser, I don’t know if that can be easily fixed on TOAF without virginising the eeprom chip in the LCM.
Someone better qualified than me may be able to advise.

Sent from my iPhone using Tapatalk

bigdaddystew · 7th March 2021, 17:39

Mine did this a few times when not being used for a while during lockdown..battery seemed ok when readings taken and was turning over o.k.
Used one of these small jump start contraptions I have and as soon as I turned the key the engine turned over a lot faster and started first time..it seemed the speed of the engine turn over was the answer and battery has to be at the top of its game....just my personal experience for what its worth...may not be your problem but worth a thought..

Cantray · 11th March 2021, 16:41

An update - I received the OBD cable in post today and soldered 7+8

Connected to car, TOAF worked straight away

Cleared old engine faults and tried to start x 2

On both occasion TOAF reports the following faults:

3505 Glow device
0400 Exhaust gas Recirculation or Exhaust gas Recirculation actuator
1195 Rail Pressure regulating Valve
0100 Air Mass Meter
1E25 Monitoring speed (rpm) sensor

The only thing I'm sure of is that its unlikely to be Glow device that is stopping car from starting, given that if fires and dies with easy start.

Any wisdom on how to interpret these codes gratefully received.

thanks!

Greeners · 11th March 2021, 17:16

Pretty sure its the fuel pressure thats the problem.

Glow plugs aren't really required in the UK to make a CDT start

this might help

Cantray · 11th March 2021, 17:20

I was beginning to think that too but noted a number of fuel pressure codes on the historic faults but low fuel pressure has not come up again since clearing the old codes.

BigRuss · 11th March 2021, 18:11

Think I know where the problem might lie

Seen this a few times now, power isn't getting to the sensors on the engine.
Check for 12v on the red and white wire that goes to the crank sensor, if there's none, temporarily run a wire from the battery to the red and white wire.
The car should then start

All that remains then is to make a permanent repair to the wiring.
It's usually caused by a failure of the spliced joint to the wire in the harness below the ECM box

There's another just above the starter motor

Russ

Cantray · 11th March 2021, 19:12

Thank you very much Russ. I''ll check this tomorrow.

BigRuss · 11th March 2021, 19:17

Applying 12v to the red/white wire should also supply the other sensors too

Russ

MarkS · 11th March 2021, 19:59

Suggestion:

Check fuse F1 (15A) in the engine fusebox.
Locate the multipole connector under the engine fusebox, with the yellow and blue wire.
Disconnect and clean up contact, then connect and disconnect a few times.
Corrosion on that contact will stop the 12V supply via the red/white wire for all the sensors etc highlighted by TOAF.

Have fun.

7th March 2021, 17:39	#23
bigdaddystew Avid contributor ROVER 75 DIESEL CONTEMPORARY SE CDTI AUTOMATIC Join Date: Apr 2015 Location: Altrincham, Cheshire Posts: 173 Thanks: 112 Thanked 58 Times in 34 Posts	cdi not starting Mine did this a few times when not being used for a while during lockdown..battery seemed ok when readings taken and was turning over o.k. Used one of these small jump start contraptions I have and as soon as I turned the key the engine turned over a lot faster and started first time..it seemed the speed of the engine turn over was the answer and battery has to be at the top of its game....just my personal experience for what its worth...may not be your problem but worth a thought..

11th March 2021, 17:16	#25
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	Pretty sure its the fuel pressure thats the problem. Glow plugs aren't really required in the UK to make a CDT start this might help __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

11th March 2021, 18:11	#27
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Think I know where the problem might lie Seen this a few times now, power isn't getting to the sensors on the engine. Check for 12v on the red and white wire that goes to the crank sensor, if there's none, temporarily run a wire from the battery to the red and white wire. The car should then start All that remains then is to make a permanent repair to the wiring. It's usually caused by a failure of the spliced joint to the wire in the harness below the ECM box There's another just above the starter motor Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details. Last edited by BigRuss; 11th March 2021 at 18:56..

11th March 2021, 19:17	#29
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Applying 12v to the red/white wire should also supply the other sensors too Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

11th March 2021, 19:59	#30
MarkS Gets stuck in Rover 75 Diesel Tourer, called Perseverance Join Date: Nov 2011 Location: Bournemouth Posts: 664 Thanks: 189 Thanked 157 Times in 108 Posts	Suggestion: Check fuse F1 (15A) in the engine fusebox. Locate the multipole connector under the engine fusebox, with the yellow and blue wire. Disconnect and clean up contact, then connect and disconnect a few times. Corrosion on that contact will stop the 12V supply via the red/white wire for all the sensors etc highlighted by TOAF. Have fun. Last edited by MarkS; 11th March 2021 at 21:09..

7th March 2021, 16:42	#21
Cantray Avid contributor Rover 75 1.8 Club SE, Rover 75 cdt Club, Rover 75 1.8 Connoisseur SE Join Date: Jul 2015 Location: Inverness Posts: 163 Thanks: 48 Thanked 44 Times in 27 Posts	Yes I think that's where this is heading. Before that quite keen to try TOAF now that I have downloaded it onto an old laptop. Unless someone tells me I'm daft.

11th March 2021, 16:41	#24
Cantray Avid contributor Rover 75 1.8 Club SE, Rover 75 cdt Club, Rover 75 1.8 Connoisseur SE Join Date: Jul 2015 Location: Inverness Posts: 163 Thanks: 48 Thanked 44 Times in 27 Posts	An update - I received the OBD cable in post today and soldered 7+8 Connected to car, TOAF worked straight away Cleared old engine faults and tried to start x 2 On both occasion TOAF reports the following faults: 3505 Glow device 0400 Exhaust gas Recirculation or Exhaust gas Recirculation actuator 1195 Rail Pressure regulating Valve 0100 Air Mass Meter 1E25 Monitoring speed (rpm) sensor The only thing I'm sure of is that its unlikely to be Glow device that is stopping car from starting, given that if fires and dies with easy start. Any wisdom on how to interpret these codes gratefully received. thanks!

11th March 2021, 17:20	#26
Cantray Avid contributor Rover 75 1.8 Club SE, Rover 75 cdt Club, Rover 75 1.8 Connoisseur SE Join Date: Jul 2015 Location: Inverness Posts: 163 Thanks: 48 Thanked 44 Times in 27 Posts	I was beginning to think that too but noted a number of fuel pressure codes on the historic faults but low fuel pressure has not come up again since clearing the old codes.

11th March 2021, 19:12	#28
Cantray Avid contributor Rover 75 1.8 Club SE, Rover 75 cdt Club, Rover 75 1.8 Connoisseur SE Join Date: Jul 2015 Location: Inverness Posts: 163 Thanks: 48 Thanked 44 Times in 27 Posts	Thank you very much Russ. I''ll check this tomorrow.