Electric Oil Pressure Gauge
- Turn ignition on and remove wire from sending unit. Gauge should indicate about 43 psi (3 kg/cm2 ). If not, check sending unit wire for short to ground. If wire is okay, replace gauge.
- Connect wire to ground. Gauge should indicate no pressure. If reading remains high, sending unit wire is broken. Check resistance of sending unit as indicated in chart.
OIL PRESSURE SENDING UNIT RESISTANCE
| Pressure psi (kg/cm2 ) | Resistance (Ohms) |
|---|---|
| 0 (0) | 10 |
| 14 (1) | 70 |
| 28 (2) | 130 |
| 43 (3) | 185 |