Troubleshooting
This section covers basic troubleshooting of engine operation or performance
malfunctions and their probable causes. In addition to operating the engine
carefully and maintaining it properly, make sure to correct any malfunction
promptly.
Abnormal Coolant Temperature
This section explains Abnormal Coolant Temperature Symptoms and Probable
Causes.
Table 10.
Abnormal Coolant Temperature Symptoms and Probable Causes
Probable Causes
Above Normal
Below Normal
Restricted cooling system passages
X
—
Restricted radiator core passages
X
—
Slipping fan drive belts
X
—
Faulty temperature-controlled fan
X
—
Obstruction in front of radiator or intercooler
X
—
Low coolant level
X
—
Damaged hoses
X
—
Faulty thermostat
X
—
Faulty water pump
X
—
Faulty radiator pressure cap
X
—
Air in coolant
X
—
Thermostat not fully closed
—
X
Leakage around thermostat seal
—
X
Faulty temperature-controlled fan
—
X
Hard Starting
This section explains hard starting.
DD Platform EuroIV Operators Manual
All information subject to change without notice.
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DDC-SVC-MAN-0175
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