Thread: Defender electrical problem, please help.

Originally Posted by DEFENDERZOOK

check where the cranking battery is earthed to the chassis......or the engine etc....

that is.....check where the negative from the battery runs to.....it sounds like it may be loose.....

why.....?
because when you join the two batteries together.....it appears to be bypassing the main battery earth.....
and getting earth through your auxillary battery and solving all your woes......


make sure the terminals on your batteries havent come loose either.....



also.....what sort of voltage are you getting from your main battery when its isolated from the aux......?
if this has died....it may simply be not supplying enough power for the computer to think......
the above remedy is assuming your main battery is ok.......


cheers...and good luck....

This is all GOOD STUFF!

Cheers,

Lionel

Hi all, I've been away for a few days but the electrical saga continues.

I found a loose lead at the bottom of a relay which controls the duel battery system. But sadly I patched that up and the result was the same. I've double checked everything and the crazy 'elctro dance' still continues.

I've even tried by-passing the entire duel battery system but then I get absolutely nothing, not even dash lights (and the battery is all good).

So my next question is how many leads should there be on a normal factory single battery? Maybe something is missing. Perhaps someone may have some pics of their battery bay that I can review??

THe thing thats pi@@ing me off is that the car went all the way from gold coast to perth up to cape york, coburg peninsula, Gibb river road and more with not even a flat tyre. and now that it sat idle in the carport for two weeks its **** itself??? go figure.

anyways, if anyone can think of anything further I would be eternally greatful. Otherwise I will have to tow it to a garage at $$$.


Jimmy
(Perth)

An update.

I can happily confirm that I have got the old defender started. I found one loose lead and I externally charged the second battery and the engine fired. It was still strange, because I didnt really change anything from a similar attempt to get it going the other day. Nonetheless its going now and I'm taking it to a service pretty soon for a full check up.

thanks to all who made suggestions.

cheers
jimy

I once had the oil pressure light do the flickering thing on a trip home late one night. It was most worrying but I had to keep driving albeit slowly. We found one of the wires from the switch to the light was bared and touching either the engine or another wire. With a clean up and some elecy tape problem solved. Looking for cracked wires can take ages but could be something similar. I always look for simple things before starting on the major things.

Jeff

Originally Posted by Jimmy

An update.

I can happily confirm that I have got the old defender started. I found one loose lead and I externally charged the second battery and the engine fired. It was still strange, because I didnt really change anything from a similar attempt to get it going the other day.

cheers
jimy

well....yes you did.......
you fixed the loose connection.......and used a fully charged battery........
this will make a big difference......