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#1
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Battery will not charge with leads connected
I have an odd problem with a 1994 Grand Am. The battery will not draw
any current from a battery charger when the positive & negative cables from the vehicle are connected to the battery. If I disconnect the leads and connect the charger directly to the posts, then it draws current perfectly and charges completely. Any thoughts why the battery will not draw current when the cables are connected? Thanks! |
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#2
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Battery will not charge with leads connected
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#3
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Battery will not charge with leads connected
That usually means there is a black oxide coating either on the posts or
the terminals causing a bad connection. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) wrote: > > I have an odd problem with a 1994 Grand Am. The battery will not draw > any current from a battery charger when the positive & negative cables > from the vehicle are connected to the battery. If I disconnect the > leads and connect the charger directly to the posts, then it draws > current perfectly and charges completely. > > Any thoughts why the battery will not draw current when the cables are > connected? > > Thanks! |
#4
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Battery will not charge with leads connected
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#5
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Battery will not charge with leads connected
Mike,
That was one of the first thoughts I had, but I wire brushed the cables and posts and the problem persists. The battery is in good shape and the car starts strongly. I'm just stumped. Jason Mike Romain wrote: > That usually means there is a black oxide coating either on the posts or > the terminals causing a bad connection. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > wrote: > > > > I have an odd problem with a 1994 Grand Am. The battery will not draw > > any current from a battery charger when the positive & negative cables > > from the vehicle are connected to the battery. If I disconnect the > > leads and connect the charger directly to the posts, then it draws > > current perfectly and charges completely. > > > > Any thoughts why the battery will not draw current when the cables are > > connected? > > > > Thanks! |
#6
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Battery will not charge with leads connected
Try a water and baking soda mix - clean the entire battery!!
-- Bing Bang Boom Viola Done! "Jasolution" > wrote in message ups.com... > Mike, > > That was one of the first thoughts I had, but I wire brushed the cables > and posts and the problem persists. The battery is in good shape and > the car starts strongly. > > I'm just stumped. > > Jason > > Mike Romain wrote: > > That usually means there is a black oxide coating either on the posts or > > the terminals causing a bad connection. > > > > Mike > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > > 88 Cherokee 235 BFG AT's > > Canadian Off Road Trips Photos: Non members can still view! > > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > > (More Off Road album links at bottom of the view page) > > > > wrote: > > > > > > I have an odd problem with a 1994 Grand Am. The battery will not draw > > > any current from a battery charger when the positive & negative cables > > > from the vehicle are connected to the battery. If I disconnect the > > > leads and connect the charger directly to the posts, then it draws > > > current perfectly and charges completely. > > > > > > Any thoughts why the battery will not draw current when the cables are > > > connected? > > > > > > Thanks! > |
#7
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Battery will not charge with leads connected
The fact that your charging makes me wonder if your alternator diodes
are up to snuff. Test cars throwback voltage, if the alt. is putting out, I'm stumped. No alt. output makes me suspect the diodes. Throwback test tools VOM Connect VOM to Battery should read approx 12 volts Start engine, with engine running, test battery voltage, should be approx 13 or so volts. Same voltage means no output, higher voltage means charging OK |
#8
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Battery will not charge with leads connected
Umm, he is not using the alternator....
Mike Paul wrote: > > The fact that your charging makes me wonder if your alternator diodes > are up to snuff. Test cars throwback voltage, if the alt. is putting > out, I'm stumped. No alt. output makes me suspect the diodes. > > Throwback test tools VOM > > Connect VOM to Battery should read approx 12 volts > > Start engine, with engine running, test battery voltage, should > be approx 13 or so volts. Same voltage means no output, higher voltage > means charging OK |
#9
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Battery will not charge with leads connected
Mike Romain wrote: > Umm, he is not using the alternator.... > > Mike > Yea, and 12 volts is essentially a dead battery. And 13v won's really charge one well. Too much guessing and approximation to help. |
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