P38A Starting mystery ( Diesel)

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tarphenry

Well-Known Member
Posts
1,526
Location
bury lancs
Hi all. Whilst on holiday , the car failed to start, made no attempt at all. A chap next to me put one of these "magic" boxes on the battery, no effect. Then we tried jump starting it , no effect and the battery seemed very low after all these efforts ,so I called recovery. 35 mins later, a tech rolls up ,i gave him the key and it fired up immediately 4 or 5 times. My battery is charging ok and everything seems good. I have no idea where to look. has this happened to anyone else? any and all assistance is appreciated Mick
 
Hi all. Whilst on holiday , the car failed to start, made no attempt at all. A chap next to me put one of these "magic" boxes on the battery, no effect. Then we tried jump starting it , no effect and the battery seemed very low after all these efforts ,so I called recovery. 35 mins later, a tech rolls up ,i gave him the key and it fired up immediately 4 or 5 times. My battery is charging ok and everything seems good. I have no idea where to look. has this happened to anyone else? any and all assistance is appreciated Mick
No start or no crank?
 
Hi Keith, no start cranks ok but battery seemed to lose power pretty quick. I have previously checked for parasitic drain but found none and also have a permanent 50 watt solar panel on roof.
 
If it cranks but does not start, assuming the in tank pump is working, then loss of sync from BECM to EDC is likely. What make is the battery? Some self discharge PDQ. Solar panel flat on the roof will often not produce much power, enough to keep a good battery topped up but not much more, I assume you have a charge regulator for the panel?
 
So battery seems too tired to crank but five minutes later cranks it over no problem and it starts with no issues?

I'd be thinking bad connection somewhere, probably the earth. Or the earth cable is bad inside. I'd go through the electrical troubleshooting guide on rr.net. There's a cooy on here somewhere too. I guess it might even be a dry joint in the fusebox. iiirc the starter fuse is one of those big 80A ones.
 
If it cranks but does not start, assuming the in tank pump is working, then loss of sync from BECM to EDC is likely. What make is the battery? Some self discharge PDQ. Solar panel flat on the roof will often not produce much power, enough to keep a good battery topped up but not much more, I assume you have a charge regulator for the panel?
Yes i have regulator and the battery is good ,tested by a trusted supplier just 6 weeks ago. no problems since that time I will check the earths as suggested but I cannot think of anything else until it happens again. thanks for your help as usual
 
So battery seems too tired to crank but five minutes later cranks it over no problem and it starts with no issues?

I'd be thinking bad connection somewhere, probably the earth. Or the earth cable is bad inside. I'd go through the electrical troubleshooting guide on rr.net. There's a cooy on here somewhere too. I guess it might even be a dry joint in the fusebox. iiirc the starter fuse is one of those big 80A ones..
Thanks ,I will check the earths . it has not happened since . I will probably have to wait till it happens again thanks for your help
 
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