Component Testing: Tachometer
Install a known good test tachometer to engine. If test tachometer and vehicle tachometer indication have a larger variation than specified in TACHOMETER TESTING table, tachometer is defective.
TACHOMETER TESTING
| Test Tachometer RPM | Vehicle Tachometer RPM |
|---|---|
| 1000 | 970-1030 |
| 2000 | 1940-2060 |
| 3000 | 2910-3090 |
| 4000 | 3880-4120 |
| 5000 | 4850-5150 |
| 6000 | 5820-6180 |
| 7000 | 6790-7210 |