| There are many charging system problems you can fix yourself. This chart will show you which ones you can fix and which ones require professional service. | ||
|---|---|---|
| Problem | Is Caused By | What To Do |
| Noisy Alternator | Loose mountings | Tighten mounting bolts |
| Loose drive pulley | Tighten pulley | |
| Worn bearings | Have bearings replaced | |
| Brush noise | Have brushes cleaned /replaced | |
| Internal circuits shorted (High pitched whine) | Have alternator replaced or overhauled | |
| Squeal when starting engine or accelerating | Glazed or loose belt | Replace or adjust belt |
| Indicator light remains on or ammeter indicates discharge (engine running) | Broken fan belt | Install belt |
| Broken or disconnected wires | Repair or connect wiring | |
| Internal alternator problems | Have alternator overhauled /replaced | |
| Defective voltage regulator | Have voltage regulator replaced | |
| Car light bulbs continually burn out-battery needs water continually | Alternator/ regulator overcharging | Have voltage regulator/alternator overhauled or replaced |
| Car lights flare on acceleration | Battery low | Charge or replace battery |
| Internal alternator/ regulator problems | Have alternator/ regulator overhauled or replaced | |
| Low voltage output (alternator light flickers continually or ammeter needle wanders) | Loose or worn belt | Replace or adjust belt |
| Dirty or corroded connections | Clean or replace connections | |
| Internal alternator/ regulator problems | Have alternator or regulator overhauled or replaced | |