Component Testing: Tachometer
Connect an external tachometer to engine. Start engine. Compare readings of external tachometer with tachometer gauge in instrument cluster. See TACHOMETER TEST . If RPM difference is not within specification, replace tachometer. When replacing tachometer, DO NOT reverse wiring connections or damage to tachometer's transistors and diodes will result.
TACHOMETER TEST (1)
| RPM | Specification | ||
|---|---|---|---|
| 1000 | 900-1100 | ||
| 2000 | 1875-2125 | ||
| 3000 | 2850-3150 | ||
| 4000 | 3850-4150 | ||
| 5000 | 4850-5150 | ||
| 6000 | 5820-6180 | ||
| 7000 | 6790-7210 | ||
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