Broken down 1 .8t -strange symptoms

Yorkshire GOC · 7th August 2020, 13:38

Hi
Did 90 miles to Trowell services - no issues - anyway tgis happened

Slowed down in car park and car started to lose revs - as she slowed down the engine continued to run in splutters till eventually stalling .

Called Rac - no fault codes found - however car started after say 25 minutes

So took a chance on getting home - 1 mile up the M1 she did it again - Rac to scene no fault codes but on trying re starting straight away the rev counter came to life so not
Crank sensor

Tried to get to an Rac garage - 3 miles later same issue - however on trying code reader (Rac man following to garage) his his reader would not connect to the car - neither would mine which is a first time - but when cooled down it did connect but no fault codes .

Also after this 3rd breakdown when i turned her over she started but the cooling fan cane on straight away and stayxed on for sone minutes - am now suspecting the ECU is faulty .Awaiting tow home- welcome any thoufhts as to whats going in. ALL issues dissappear
When cooled down but e
Reappear when engine hot.??

trikey · 7th August 2020, 14:36

Hi Martin, I take it all the fluids are ok (knowing you I’m sure they are)

I would guess at ecu too from what you have said, how’s the wiring from the crank sensor near the turbo? If that gets cooked then it fries the ecu.

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SD1too · 7th August 2020, 14:44

Martin,

I take it that you've got the orange clip fitted?

Simon

trikey · 7th August 2020, 14:45

Quote:

Originally Posted by SD1too

Martin,

I take it that you've got the orange clip fitted?

Simon

He sure has 👍

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Yorkshire GOC · 7th August 2020, 14:47

Hello Andy - fluids are all fine - i am thinking ECU - because of the fact she would not talk to the RAC DT or my own diagnostic tool until she cooled down and now the fan coming on when not up to temp ( checked the on board 19/7 with my Hans gauge and rhey match) - will check the Crankshaft wiring to see if it is heat damaged .Once cooled down she starts fine - rev counter steady then after a few miles she loses power and rhe revs drip to nothing then stalls.
Cheers
Martin

M

Yorkshire GOC · 7th August 2020, 17:37

Still waiting for RAC recovery - 4 hours and counting - whisat here more gremlins apparent - the light on sounder not working and when key to pos 1 4 beeps and the rear wiper swipes even though off on the stalk. So l
looking more and more KBUS or ECU.

suzublu · 7th August 2020, 17:54

Strange wiper antics when off usually means, when a new radio is fitted, that the switched live/positive live are the wrong way round, that's on the front though, so you may be right about the K-Bus

Yorkshire GOC · 7th August 2020, 19:26

When i get the car back tomorrow i will sniff ecu plug
And check for under bonnet fuse box chafing - then cranksensor wiring for heat damage - then look at the Canbus - in view of the associated gremlins its looking elelctrical . But will bear in mind the FF O ring .

7th August 2020, 13:38	#1
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,063 Thanks: 1,842 Thanked 623 Times in 469 Posts	Broken down 1 .8t -strange symptoms Hi Did 90 miles to Trowell services - no issues - anyway tgis happened Slowed down in car park and car started to lose revs - as she slowed down the engine continued to run in splutters till eventually stalling . Called Rac - no fault codes found - however car started after say 25 minutes So took a chance on getting home - 1 mile up the M1 she did it again - Rac to scene no fault codes but on trying re starting straight away the rev counter came to life so not Crank sensor Tried to get to an Rac garage - 3 miles later same issue - however on trying code reader (Rac man following to garage) his his reader would not connect to the car - neither would mine which is a first time - but when cooled down it did connect but no fault codes . Also after this 3rd breakdown when i turned her over she started but the cooling fan cane on straight away and stayxed on for sone minutes - am now suspecting the ECU is faulty .Awaiting tow home- welcome any thoufhts as to whats going in. ALL issues dissappear When cooled down but e Reappear when engine hot.?? __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.

7th August 2020, 14:36	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,765 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Hi Martin, I take it all the fluids are ok (knowing you I’m sure they are) I would guess at ecu too from what you have said, how’s the wiring from the crank sensor near the turbo? If that gets cooked then it fries the ecu. Sent from my iPhone using Tapatalk __________________ Lest we forget..

7th August 2020, 14:44	#3
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,344 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Martin, I take it that you've got the orange clip fitted? Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

7th August 2020, 14:47	#5
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,063 Thanks: 1,842 Thanked 623 Times in 469 Posts	Hello Andy - fluids are all fine - i am thinking ECU - because of the fact she would not talk to the RAC DT or my own diagnostic tool until she cooled down and now the fan coming on when not up to temp ( checked the on board 19/7 with my Hans gauge and rhey match) - will check the Crankshaft wiring to see if it is heat damaged .Once cooled down she starts fine - rev counter steady then after a few miles she loses power and rhe revs drip to nothing then stalls. Cheers Martin M __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.

7th August 2020, 17:37	#6
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,063 Thanks: 1,842 Thanked 623 Times in 469 Posts	Update Still waiting for RAC recovery - 4 hours and counting - whisat here more gremlins apparent - the light on sounder not working and when key to pos 1 4 beeps and the rear wiper swipes even though off on the stalk. So l looking more and more KBUS or ECU. __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.

7th August 2020, 17:54	#7
suzublu This is my second home rover 75 1.8 vvc club se wedgwood blue Join Date: Aug 2009 Location: Seaton Carew Posts: 26,912 Thanks: 65 Thanked 7,142 Times in 4,642 Posts	Strange wiper antics when off usually means, when a new radio is fitted, that the switched live/positive live are the wrong way round, that's on the front though, so you may be right about the K-Bus

7th August 2020, 19:26	#8
Yorkshire GOC I really should get out more....... Rover 75 connoisseur se v6 auto Join Date: May 2014 Location: Hull Posts: 2,063 Thanks: 1,842 Thanked 623 Times in 469 Posts	When i get the car back tomorrow i will sniff ecu plug And check for under bonnet fuse box chafing - then cranksensor wiring for heat damage - then look at the Canbus - in view of the associated gremlins its looking elelctrical . But will bear in mind the FF O ring . __________________ She came off the Longbridge Line on 20-05-2003 The Silver Machine was the 13th of 160 Rover 75's to come off the production line that day and is the 100th of 527 Starlight Silver Rover 75 2.5 V6 Connoisseur SE Auto saloons listed in the build records produced world wide.