Intermittent non-start from cold (diesel auto)

MissMoppet · 2nd July 2019, 11:06

Yes I know I'm hardly the first to post this but as there are so many suggestions on the Forum could some clever chap narrow the priorities down please?
Very rarely fails to start (always from cold, never any problems from hot) - but when it does no clicks are heard, nothing at all - repeated tries then it fires fine. And runs fine. As it has never failed to start when warm, this presumably rules out cam sensor? My trawling of posts tends to suggest starter solenoid, but what do I know? Battery connections are good and tight.

tonytolle · 2nd July 2019, 13:32

Quote:

Originally Posted by MissMoppet

Yes I know I'm hardly the first to post this but as there are so many suggestions on the Forum could some clever chap narrow the priorities down please?
Very rarely fails to start (always from cold, never any problems from hot) - but when it does no clicks are heard, nothing at all - repeated tries then it fires fine. And runs fine. As it has never failed to start when warm, this presumably rules out cam sensor? My trawling of posts tends to suggest starter solenoid, but what do I know? Battery connections are good and tight.

If you ever find that clever chap he will probably tell you that the most likely cause is solenoid contacts ,they are very cheap and easy to fit once the starter is off. There are several traders on here that have them. I wasn't that lucky but that is rare apparently. There is a very good "how to" on here .

COLVERT · 2nd July 2019, 14:38

If it was the starter solenoid you WOULD hear a click.

However with the points inside in poor ( burnt ) condition no electricity would go into the starter motor.

It's the points that get replaced when repairing the solenoid and not the solenoid core or electrical windings.

If you don't hear a click then it's probably a poor ( intermittent ) connection at the 12 volt tag on the solenoid body.

Arctic · 3rd July 2019, 02:29

Hi Dave.
Click the link below it may help

https://www.the75andztclub.co.uk/for...d.php?t=227316

2nd July 2019, 11:06	#1
MissMoppet Posted a thing or two R 75 Tourer diesel Conny 2002, V6 Conny saloon petrol 2003 Join Date: Mar 2013 Location: Taunton Posts: 1,125 Thanks: 212 Thanked 406 Times in 223 Posts	Intermittent non-start from cold (diesel auto) Yes I know I'm hardly the first to post this but as there are so many suggestions on the Forum could some clever chap narrow the priorities down please? Very rarely fails to start (always from cold, never any problems from hot) - but when it does no clicks are heard, nothing at all - repeated tries then it fires fine. And runs fine. As it has never failed to start when warm, this presumably rules out cam sensor? My trawling of posts tends to suggest starter solenoid, but what do I know? Battery connections are good and tight. __________________ Rover 75 Tourer Conny 2002 remapped 160 auto, R75 V6 2.5L auto Connoisseur 2003

3rd July 2019, 02:29	#4
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,695 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	Hi Dave. Click the link below it may help https://www.the75andztclub.co.uk/for...d.php?t=227316 __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise "

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2nd July 2019, 14:38	#3
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	If it was the starter solenoid you WOULD hear a click. However with the points inside in poor ( burnt ) condition no electricity would go into the starter motor. It's the points that get replaced when repairing the solenoid and not the solenoid core or electrical windings. If you don't hear a click then it's probably a poor ( intermittent ) connection at the 12 volt tag on the solenoid body.