Coolant Loss - Dodge D250 1990 Service Manual

Troubleshooting Logic
PageSA-24
Base Engine Components
DODGE Turbo Diesel
Coolant Loss
Cause Correction
Radiator or Cab Heater Leaking
Visually Inspect the Radiator Heater,
Hoses and Connections to Locate the
Leak.
Radiator or Cab Heater Leaking
Visually Inspect the Radiator Heater,
Hoses and Connections to Locate the
Leak.
If Oil is Present in the Coolant, Check
for a Transmission or Lube Oil Cooler
Leak.
External Engine Leak Visually Inspect the Engine and
Components for Seal or Gasket Leaks.
OK
Overheating or Leaking Compression
Gases Resulting in Loss Through the
Radiator Overflow
Review the Operation for Overheating
and Low Power. Refer to
Overheating or Leaking Compression
Gases Resulting in Loss Through the
Radiator Overflow
Troubleshooting Logic for Coolant
Temperature Above Normal.
OK
•
Transmission Cooler Leak Check for Mixing of Coolant and
Transmission Fluid.
OK
t
Lube Oil Cooler Leak Check/Replace the Oil Cooler. Look for
Coolant in the Oil.
OK
•
Head Gasket Leak Check/Replace the Head Gasket.
OK
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