Speedometer Calibration Test
WARNING: This page is about a different car, the 1997 Mercury Mountaineer and 1997 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Test drive vehicle and time number of seconds taken to travel one measured mile at an indicated 10, 30 and 60 MPH. Compare results with specifications. See SPEEDOMETER CALIBRATION table. Calculate actual vehicle speed using the following formula: 3600 divided by seconds equals MPH.
SPEEDOMETER CALIBRATION
| Indicated Speed | Seconds | Actual Speed |
|---|---|---|
| 10 | 275-345 | 13.1-10.4 |
| 30 | 115-125 | 31.3-28.8 |
| 60 | 57-62 | 63.2-58.1 |