Electric Oil Pressure Gauge Test
- 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 sending unit resistance. See OIL PRESSURE SENDING UNIT RESISTANCE table.
OIL PRESSURE SENDING UNIT RESISTANCE
| Pressure - psi (kg/cm2 ) | Resistance (Ohms) |
|---|---|
| 0 (0) | 10 |
| 14 (1) | 70 |
| 28 (2) | 130 |
| 43 (3) | 185 |