Calibration Test
Connect a calibrated, reliable tachometer to vehicle ignition system. Operate engine at various speeds (RPM). See TACHOMETER ALLOWABLE VARIATION table. If comparison between tach-dwell meter and vehicle tachometer readings are not within permissible variation, replace vehicle tachometer.
TACHOMETER ALLOWABLE VARIATION
| Application & Engine Speed (RPM) | Allowable Variation (RPM) | |
|---|---|---|
| Eclipse, Galant & 3000GT | ||
| 1000 | 900-1100 | |
| 3000 | 2850-3150 | |
| 5000 | 4750-5250 | |
| 6000 | 5700-6300 | |
| Mirage, Montero & Montero Sport | ||
| 700 | 600-800 | |
| 3000 | 2850-3150 | |
| 5000 | 4750-5250 | |
| 6000 | 5700-6300 | |
NOTE:
Circuit test for Eclipse, Galant, Montero and 3000GT is not available from manufacturer at time of publication.