Oil Pressure Gauge
Oil pressure gauge measures electrical current flow from variable-resistance oil pressure sending unit. Sending unit resistance is low when oil pressure is low, and is about 90 ohms when oil pressure is high. A change in resistance changes current flow through gauge electromagnetic coils, causing pointer to move from low to high.
OIL PRESSURE SENDING UNIT LOCATIONS
| Application | Location |
|---|---|
| 4.3L, 5.0L & 5.7L | Lower Left Rear Of Engine Block |
| 6.2L | Top Left Rear Of Engine Block |
| 7.4L | Lower Left Front Of Engine Block |