Low Lubrication Pressure for Isuzu Isuzu T-Series (Truck Line C) 2001

The oil level is low.

Add oil in order to acquire the proper oil level. Refer to Automatic Transmission Fluid and Filter Replacement .

The engine idle speed is too low.

Refer to Idle Speed Adjustment.

The oil cooler lines are restricted or leaking.

1. Check the lines for kinks or leaks.
2. Reroute or replace the lines as necessary. Refer to Oil Cooler Hose/Pipe Replacement .

The transmission is excessively leaking oil internally.

Overhaul the transmission.