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CM870 and ISX Engines – Engine Will Not Shut Off

Symptom Tree  t081

This is symptom tree t081
Cause Correction

Electronic fault codes active or high counts of inactive fault codes

Read the fault codes with an electronic service tool. Refer to Section TF for fault code troubleshooting.
 

Injector is malfunctioning

Perform the automated cylinder performance test. Replace injectors as necessary. Refer to Procedure 006-026 or 014-008 in Troubleshooting and Repair Manual, Signature/ISX/QSX Engines, Bulletin 3666239.
 

Engine is running on fumes drawn into the air intake

Check the air intake ducts. Locate and isolate the source of the fumes. Repair as necessary. Refer to the OEM service manual.
 

Turbocharger oil seal is leaking

Check the turbocharger compressor and turbine seals. Refer to Procedure 010-033 in Troubleshooting and Repair Manual, Signature/ISX/QSX Engines, Bulletin 3666239.

 
Last Modified:  16-Dec-2003
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