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Join Date: Sep 2006
Location: scotland
Posts: 248
battery light on and car eventually cuts out!!

new prob guys
car ticking over fine for ages!!drives ok for a few miles but battery light seems to be on all the time,,re-done the earth on my starter to gearbox,still the same drives ok for a few miles then have to keep the revs well up to keep the car ticking over then it cuts out after it coughing and banging at revs.jump started car,started ok then wants to cut out straight away again,,light on dash seem to go dim aswell...seems like something draining the battery or alternator wiring incorrect???..not sure though!..any ideas???
n.b car just had engine re-fitted after rebuild,,,all parts of engine had been removed

Old 06-02-2007, 12:05 PM
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Join Date: Oct 2000
Location: Lincoln, NE
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You either have a bad battery or a bad alternator or bad voltage regulator. Or you rewired something incorrectly. Check it out with a volt meter. Good battery with engine off = 12.5 volts. Good alternator should be putting out 13.5-14.5 volts at the battery with engine running at 1000 rpm.
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Old 06-02-2007, 12:54 PM
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That's how mine acted when the alternator went bad. I had to replace a diode inside.
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Old 06-02-2007, 01:49 PM
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Alternator or volt regulator. Run the test Kurt mentioned and you'll know for sure. You may have sucked the battery beyond recharging as well if this has been happenign for a while.

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Old 06-02-2007, 03:41 PM
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