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ISB/ISBe Series Engines – Engine Will Not Shut Off

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Symptom Tree  t081

This is symptom tree
Cause Correction

Keyswitch circuit is malfunctioning

Check the vehicle keyswitch circuit. Refer to Procedure
019-064.
 

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 the Troubleshooting and Repair Manual, ISB
e, ISB, and QSB (Common Rail Fuel System) Series Engines, Bulletin 4021271.

 
Last Modified:  09-Apr-2007
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