Troubleshooting; Abnormal Coolant Temperature; Hard Starting - Detroit Diesel DD15 EuroIV Operator's Manual

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
Restricted cooling system passages
Restricted radiator core passages
Slipping fan drive belts
Faulty temperature-controlled fan
Obstruction in front of radiator or intercooler
Low coolant level
Damaged hoses
Faulty thermostat
Faulty water pump
Faulty radiator pressure cap
Air in coolant
Thermostat not fully closed
Leakage around thermostat seal
Faulty temperature-controlled fan

Hard Starting

This section explains hard starting.
All information subject to change without notice.
DDC-SVC-MAN-0175 Copyright © 2014 DETROIT DIESEL CORPORATION
DD Platform EuroIV Operators Manual
Above Normal
X
X
X
X
X
X
X
X
X
X
X
—
—
—
Below Normal
—
—
—
—
—
—
—
—
—
—
—
X
X
X
103