Gauges, Overfueling And Loading - Dodge D250 1990 Service Manual

Cooling System
DODGE Turbo Diesel
Cooling System Malfunctions - Diagnosis
Page 7-9
With the jiggle pins sealed, the flow to the radiator is controlled
by the thermostat responding to the engine coolant
temperature.
Gauges, Overfueling and Loading
Gauges and sensors are used in the system to measure the
coolant temperature. These can malfunction and provide an
incorrect temperature indication.
Caution: Overfueling can cause the engine to overheat.
Make sure that the fuel pump Is calibrated correctly.
Caution: Constant overloading (lugging) can cause the
engine to run hot.