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Discussion Starter · #1 ·
1st time posting, bought my son a Corsa as his first car and twice this week he's had battery light come up on dash.
He was stopped at traffic lights both times (didn't stall), engine continued to run but car wouldn't pull away until light went out.
I've checked voltages, 12.7 vdc stopped and 14.0 vdc when idling. Belt appears in good condition. Any other ideas?
 

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Yes i dont think there is much you can do, it sounds like its charging ok are you positive its the charge light and not some other light...if it turns over and starts ok there should be a problem with that side f things..Fred.
 

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Thanks for reply Fred, car is booked in on Tuesday, I'll update thread on outcome, so atleast there is some sort of conclusion or solution. I'm hoping these 3 events will show up codes once they plug in the diagnostics kit, but I've no idea if they'll be saved/recorded.
 

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Discussion Starter · #5 · (Edited)
Car was at garage all day today, all voltages checked ok, continuity of alternator winding checked ok. Technician took car on several test runs but fault didn't appear. Diagnostics showed error code for engine coolant temperature, reading -40 degC (minus forty). Not sure how that would cause a charging fault light on dash? Got told it might be faulty thermostat, at which I laughed, even if thermostat was duff, there's still no way the coolant temp is getting down to minus forty lol. Anyway car is now booked into main Vauxhall dealership tomorrow morning, this might be a saga
 

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Hi there sounds like coolant temp sender faulty....but i thought it might read high....not sure...Fred.

Car was at garage all day today, all voltages checked ok, continuity of alternator winding checked ok. Technician took car on several test runs but fault didn't appear. Diagnostics showed error code for engine coolant temperature, reading -40 degC (minus forty). Not sure how that would cause a charging fault light on dash? Got told it might be faulty thermostat, at which I laughed, even if thermostat was duff, there's still no way the coolant temp is getting down to minus forty lol. Anyway car is now booked into main Vauxhall dealership tomorrow morning, this might be a saga
 
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