Battery light

A

A1wil

Member
 salisbury
Hi guys, so I took my car out today for the first time in two weeks because of the bad weather. After about 15 mins of driving the battery light came on. About 5 mins later all the lights came on and the car died. I managed to get it started with jump leads but the light came straight on as soon as I took the leads off. Rather than just go straight in and put a new alternator has anyone else had any issues. About a month ago I checked the battery voltage 12.8v when it was not running and then 13.9v when the engine was running so it was working . Anything worth checking ??? , I'm thinking of checking the voltage directly from the Alternator anybody done this. ??

Cheers guys
 
Battery could be shot? Have you had it tested?
(I have one and it tells you how many cca it has compared to spec). It also tells you if it needs a re-charge or if it is too fudged and needs to be replaced.
 
A1wil said:
Hi guys, so I took my car out today for the first time in two weeks because of the bad weather. After about 15 mins of driving the battery light came on. About 5 mins later all the lights came on and the car died. I managed to get it started with jump leads but the light came straight on as soon as I took the leads off. Rather than just go straight in and put a new alternator has anyone else had any issues. About a month ago I checked the battery voltage 12.8v when it was not running and then 13.9v when the engine was running so it was working . Anything worth checking ??? , I'm thinking of checking the voltage directly from the Alternator anybody done this. ??

Cheers guys
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The battery started the car OK. Then it discharged whilst running. Has to be alternator related. Check leads & belts too.
 
Well I have pulled the positive lead of the alternator and there is 0.46v so I'm going to go with the alternator. Seen one on eBay £100 " 333374883932 " . Do I need to remove the radiator fan ? .
 
Your battery could be showing 12v but there may be a couple of cells down causing half cold crank amps or worse, halfords do a free battery check, I would run it down and get them to test it before you put an alternator on.
 
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