Alternator not charging or insufficient charging
| Cause | Correction | |
| Loose or corroded battery connections |
 |
Clean/tighten battery connections. |
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| Alternator belt slipping |
|
Check/replace belt tensioner. |
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| Alternator pulley lose on shaft |
|
Tighten pulley. |
|
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| Malfunctioning alternator |
|
Replace alternator. |