LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1991 >> Magnavan 5.7 K >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 (Instrument Panel - C/K Series Pickups) >> Component Tests >> Oil Pressure Gauge Testing & Diagnosis >> Gauge Constantly Reads 80 Or More

Gauge Constantly Reads 80 Or More

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1991 GMC Pickup, 1991 GMC Cab & Chassis, 1991 GMC C3500 HD, 1991 Chevrolet Pickup, and 1991 Chevrolet Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check for open circuit between gauge and sending unit by disconnecting lead at sending unit. Connect lead to ground, and note reading on gauge.
  2. If oil pressure gauge reads zero, replace oil pressure gauge sending unit. If oil pressure gauge still reads 80 or beyond, find open wire between gauge and sending unit.
scientia non olet · About LEMON Manuals