MBE 4000 SERVICE MANUAL 6SE412 All information subject to change without notice. (Rev. 2007) 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07 16-5 Problem—The Engine Starts, But Dies Cause Remedy The fuel tank is low or empty. Add fuel and bleed the fuel system, if necessary. The fuel filter is clogged. Replace the filter element. The fuel line, the fuel pre-filter, or the screen in the fuel tank is blocked. Clean and bleed the system. Have the fuel lines and filters checked by an authorized dealer. The camshaft TDC sensor and/or the crank angle position sensor are out of adjustment. Push both sensors into their holes as far as they will go.
If this does not solve the problem, bring the vehicle to an authorized dealer for service. The camshaft TDC sensor and/or the crank angle position sensor are damaged. Bring the vehicle to an authorized dealer for service. The constant-throttle valves are malfunctioning. Bring the vehicle to an authorized dealer for service. There are other problems in the fuel system. Bring the vehicle to an authorized dealer for service. Problem—The Engine Fan Doesn't Work Cause Remedy The fan hub is damaged. Replace the fan hub. The fan wiring is damaged. Repair the fan wiring. The parameter settings in the PLD or VCU control unit are incorrect. Have an authorized dealer reprogram the control unit.
Problem—The Engine Fan Is Constantly On Cause Remedy The fan override switch is on. Check the operation of the fan override switch. The fan hub is damaged. Replace the fan hub The parameter settings in the PLD or VCU control unit are incorrect. Have an authorized dealer reprogram the control unit. Problem—Fuel Consumption Is Too High Cause Remedy The tires are not properly inflated. Check all tires for correct pressure. The air filter and/or intake air system is clogged. Check the air restriction indicator. Clean the intake air system and replace the air filter if necessary. The fuel filter is clogged. Replace the filter element. The exhaust brake valve is malfunctioning.
Have an authorized dealer check the operation of the valve. The engine performs poorly, or does not develop full power. The remedies are listed in "The Engine Performs Poorly, Does Not Develop Full Power."