Detroit Diesel MBE4000 Service Information
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Detroit Diesel MBE4000 Service Information

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NUMBER: 1–MBE 4000–07 S.M. REF.: see table 1 ENGINE: MBE 4000 DATE: February 2007
SUBJECT: LOW POWER CONCERN
PUBLICATION: EPA-04 MBE 4000 SERVICE MANUAL (6SE412)
The service manual has been restructured to add a "Low Power Concern" chapter. Previously the
troubleshooting concerns were found in chapter 15, now each troubleshooting concern has its own
chapter.
Service Manual Chapter
15
16
17
Table 1 Troubleshooting Chapters
Chapter 17 includes factors that affect wheel horsepower and other associated low power information.
ADDITIONAL SERVICE INFORMATION
Additional service information is available in the Detroit Diesel MBE 4000 Service Manual, 6SE412.
The next revision to this manual will include the revised information.
Decsription
Troubleshooting The Electronic Engine Control System
General Mechanical Troubleshooting
Low Power Concern

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Summary of Contents for Detroit Diesel MBE4000

  • Page 1 Chapter 17 includes factors that affect wheel horsepower and other associated low power information. ADDITIONAL SERVICE INFORMATION Additional service information is available in the Detroit Diesel MBE 4000 Service Manual, 6SE412. The next revision to this manual will include the revised information.

  • Page 2: Control System

    TROUBLESHOOTING THE ELECTRONIC ENGINE CONTROL SYSTEM Section Page 15.1 ELECTRONIC ENGINE CONTROL SYSTEM ......... 15- 3...
  • Page 3 (Rev. 2007) All information subject to change without notice. 15-2 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...

  • Page 4: Electronic Engine Control System

    Guide (6SE422) or bring the vehicle to an authorized repair facility. Complete fault codes can be read using minidiag2. All information subject to change without notice. (Rev. 2007) From Bulletin 1–MBE 4000–07 15-3 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 5 15.1 ELECTRONIC ENGINE CONTROL SYSTEM (Rev. 2007) All information subject to change without notice. 15-4 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 6 GENERAL MECHANICAL TROUBLESHOOTING Section Page 16.1 MECHANICAL TROUBLESHOOTING ............ 16-3...
  • Page 7 (Rev. 2007) All information subject to change without notice. From Bulletin 1–MBE 4000–07 16-2 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...

  • Page 8: Mechanical Troubleshooting

    The transmission fluid does not meet the correct Change the transmission fluid, using the correct type specifications. of fluid. All information subject to change without notice. (Rev. 2007) From Bulletin 1–MBE 4000–07 16-3 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 9 There are other problems in the fuel system. Bring the vehicle to an authorized dealer for service. (Rev. 2007) All information subject to change without notice. 16-4 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 10 The engine performs poorly, or does not develop full The remedies are listed in "The Engine Performs Poorly, power. Does Not Develop Full Power." All information subject to change without notice. (Rev. 2007) From Bulletin 1–MBE 4000–07 16-5 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 11 Bring the vehicle to an authorized dealer for service. There is internal damage to the engine. Bring the vehicle to an authorized dealer for service. (Rev. 2007) All information subject to change without notice. 16-6 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 12 Have an authorized dealer replace the air compressor. The cylinder head gasket is leaking. Have an authorized dealer replace the head gasket. All information subject to change without notice. (Rev. 2007) From Bulletin 1–MBE 4000–07 16-7 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 13 Check the intake air preheater, and replace it, if The intake air preheater is malfunctioning. necessary. The valves are not adjusted properly. Check the valve lash. (Rev. 2007) All information subject to change without notice. 16-8 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 14 Components of the PLD and/or VCU control unit are Bring the vehicle to an authorized dealer for service. damaged or not working properly. All information subject to change without notice. (Rev. 2007) From Bulletin 1–MBE 4000–07 16-9 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 15 The alternator is damaged (has a damaged rectifier or Have an authorized dealer replace the alternator. voltage regulator). (Rev. 2007) All information subject to change without notice. 16-10 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...

  • Page 16: Table Of Contents

    LOW POWER CONCERN Section Page 17.1 FACTORS THAT AFFECT WHEEL HORSEPOWER ......17-3 17.2 LOW HORSEPOWER INTERVIEW ............17-6 17.3 AERATED FUEL ..................17-13 17.4 RESTRICTED AIR CLEANER ELEMENT ..........17-15 17.5 RESTRICTED OR CRACKED CHARGE AIR COOLER OR LEAKING INTAKE MANIFOLD .................
  • Page 17 (Rev. 2007) All information subject to change without notice. 17-2 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...

  • Page 18: Factors That Affect Wheel Horsepower

    Faulty Turbocharger A turbocharger that has wheel rubbing, oil leaks, bent blades, etc. will not provide adequate air supply. All information subject to change without notice. (Rev. 2007) 17-3 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...
  • Page 19 Air system leaks will result in insufficient air for optimum combustion. Biodiesel Should not be higher than 5%. Refer to Engine Requirements – Lubricating Oil, Fuel and Filters, (7SE270), available from authorized Detroit Diesel distributors. Charge Air Cooler Leak Air system leaks will result in insufficient air for optimum combustion.
  • Page 20 Make sure the foot pedal has complete travel. The foot pedal position can be monitored on DDDL (accelerator pedal pos.) Table 17-1 Factors Affecting Wheel Horsepower All information subject to change without notice. (Rev. 2007) 17-5 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...

  • Page 21: Low Horsepower Interview

    17.2.1 Driver Questionnaire This section should serve as a guideline for the technician. (Rev. 2007) All information subject to change without notice. 17-6 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 22 MBE 4000 SERVICE MANUAL For an example of the driver questionnaire see Figure 17-1. Figure 17-1 Driver Questionnaire All information subject to change without notice. (Rev. 2007) 17-7 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...
  • Page 23 1. If the problem is repeatable, take the vehicle for a drive with Detroit Diesel Diagnostic Link (DDDL) connected and note the conditions when the problem occurs. Be prepared to take snapshot data using DDDL.
  • Page 24 Gather this data and contact the DDC Customer Support Center at 313-592-5800. All information subject to change without notice. (Rev. 2007) 17-9 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...

  • Page 25: Troubleshooting Tree

    LOW HORSEPOWER INTERVIEW 17.2.2 Troubleshooting Tree Following is the troubleshooting tree for low horsepower: Figure 17-2 Troubleshooting Tree (Rev. 2007) All information subject to change without notice. 17-10 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 26 HP data. Record data on AFA claim. NOTE: Service information letter instructions published following the date of this document take precedence. All information subject to change without notice. (Rev. 2007) 17-11 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...

  • Page 27: Low Power Troubleshooting Chart

    Debris in Fuel Tank — — - Air Vent Plugged refer to section 17.1 Table 17-2 Low Power Troubleshooting Chart (Rev. 2007) All information subject to change without notice. 17-12 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...

  • Page 28: Aerated Fuel

    Test the Engine with Aerated Fuel Resolution Perform the following steps to determine if aerated fuel resolution resolved lack of power condition: All information subject to change without notice. (Rev. 2007) 17-13 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...
  • Page 29 [b] If lack of power occurred during the test drive, shut down the engine and . refer to section 17.4. (Rev. 2007) All information subject to change without notice. 17-14 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...

  • Page 30: Restricted Air Cleaner Element

    [b] If lack of power occurred during the test drive, shut down the engine. Check the charge air cooler; refer to section 17.5. All information subject to change without notice. (Rev. 2007) 17-15 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...

  • Page 31: Restricted Or Cracked Charge Air Cooler Or Leaking

    Perform the following steps to repair the air intake manifold: 1. Remove the air intake manifold; refer to MBE 4000 Service Manual (6SE412), Air system chapter 6.1. (Rev. 2007) All information subject to change without notice. 17-16 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 32 [b] If lack of power occurred during the test drive, shut down the engine. Check the exhaust system; refer to section 17.6. All information subject to change without notice. (Rev. 2007) 17-17 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...

  • Page 33: Faulty Exhaust System

    2. Repair or replace defective exhaust system components; refer to OEM guidelines. 3. Verify exhaust system resolution; refer to section 17.6.1.1. (Rev. 2007) All information subject to change without notice. 17-18 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 34 [b] If lack of power occurred during the test drive, shut down the engine. Check for high inlet air temperature; refer to section 17.7. All information subject to change without notice. (Rev. 2007) 17-19 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...

  • Page 35: High Inlet Air Temperature

    1. Start and run the engine. 2. Test drive the vehicle to ensure lack of power has been resolved. (Rev. 2007) All information subject to change without notice. 17-20 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 36 [b] If lack of power occurred during the test drive, shut down the engine, contact the Detroit Diesel Customer Support Center (313–592–5800). All information subject to change without notice. (Rev. 2007) 17-21 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07...

  • Page 37: Verification Of Power With Chassis Dynamometer

    For direct engine cooling, Detroit Diesel recommends the use of a 368 m3 /min (13,000 ft3 /min) or greater capacity barrel-type ram air fan. This should be portable so that it can be conveniently placed three to five feet (approximately one to two meters) in front of the truck and aimed directly...
  • Page 38 □ When loading the vehicle on the dynamometer, make sure the vehicle is positioned onto the rollers as straight as possible. □ For direct engine cooling, Detroit Diesel recommends the use of a 368 m3 /min (13,000 ft3 /min) or greater capacity barrel-type ram air fan. This should be portable so that it can be conveniently placed three to five feet (approximately one to two meters) in front...
  • Page 39 435 bhp @ 1900 (1550 lb-ft @ 1100 RPM) 450 bhp @ 1900 (1550 lb-ft @ 1100 RPM) Table 17-3 Minimum Acceptable Wheel HP Model 460 (Rev. 2007) All information subject to change without notice. 17-24 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION...
  • Page 40 Detroit Diesel®, DDC® and the spinning arrows design are registered trademarks of Detroit Diesel Corporation. © Copyright 2007 Detroit Diesel Corporation. All rights reserved. Printed in U.S.A.

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