Detroit Diesel MBE 4000 Service Manual page 574

15.2 GENERAL TROUBLESHOOTING
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Problem—The Engine Performs Poorly, Does Not Develop Full Power
The air filter and/or intake air system is clogged.
The exhaust brake valve is malfunctioning.
The fuel filter is clogged.
There are other problems with the fuel system.
The valves are not adjusted properly
The coolant temperature sensor is damaged or reading
incorrectly.
The fuel temperature sensor is damaged or reading
incorrectly.
The engine oil temperature sensor is damaged or
reading incorrectly.
The charge-air temperature sensor is damaged or
reading incorrectly.
There are problems with the PLD or VCU control unit.
There is internal damage to the engine.
Problem—The Engine Is in Emergency Running Mode (constant speed 1,300 rpm)
The PLD or VCU control unit is damaged.
15-8
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Cause
Cause
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Remedy
Check the air restriction indicator. Clean the intake air
system and replace the air filter if necessary.
Have an authorized dealer check the operation of the
valve.
Replace the filter element.
Bring the vehicle to an authorized dealer for service.
Check the valve lash. See
Bring the vehicle to an authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Remedy
Bring the vehicle to an authorized dealer for service.
All information subject to change without notice.
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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