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Discussion Starter #1
LONG POST ALERT - sorry if it goes on a bit but please bear with me.

Last Monday got in the van to go work and it was completely dead - absolutely nothing in it. It had been standing for the weekend whilst I was away at BugJam. I checked and everything was off, and I've left it stood for the weekend before, and used internal lights, radio etc and it started fine first time, but thought it was just a one off. After a jump start it was fine, starting every morning first time as usual. I then drive about 15 miles to work then 15 miles back every day with no problems.

This morning I went out and it had just about enough to heat the glow plugs, and then when I tried to turn it over it wouldn't go and was dead. Another quick jump start and its fine.

At lunch I go to a local battery place for a test. Diagnostic machine thing says its a good battery, big springy thing with a gauge he put over the terminals says its holding its charge so he says there's no need for a new battery.

I put a multimeter on the battery when the engine was off and got a reading of 12.8 volts. Engine on 13.8 volts - is this what it should be? Or is the alternator not putting enough out?

I also took the + terminal off and put the meter between it and the battery (when the engine was off) to see if there is anything drawing current - which there isnt.

Any suggestions on anything else to try?

Info - its a 2003 2.5 TDi 102, ex-AA with the later switches/control unit that switches off with the iginition so no switches on the dash.
 

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Sounds as if alternator and battery are OK, so I'd check the battery connections, especially the earth from the battery to the body then on to the starter motor. Had this once and it turned out to be a loose earth cable. Good Luck
 

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I put a multimeter on the battery when the engine was off and got a reading of 12.8 volts. Engine on 13.8 volts - is this what it should be? Or is the alternator not putting enough out?

Perfectly Acceptable readings.

Could be your battery still - The load test he tried by the sounds of it was quite primitive.

I have seen batteries with no water in still pass the load test.

I would try and get a better test done.
 

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Discussion Starter #5
Cheers guys, will check earth's tonight. Stupid question but where do I look for the earth to the body work?

Are the KwikFit type places good enough for battery checks? I took it originally to a local independent battery specialist for the test as I thought they'd be a bit better.

Seem to remember a Watchdog type program from years ago where one of the big nationals would just short your battery out and knacker it when you went for a free test so you had to buy a new one there and then.
 
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