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CM870 and ISX Engines – Engine Decelerates Slowly

Symptom Tree  t041

This is symptom tree t041
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.
 

Accelerator pedal or lever is restricted or malfunctioning

Check the percent accelerator pedal or lever reading on an electronic service tool. Verify that it reads 100 percent with the accelerator pedal depressed and 0 percent when released. Calibrate the accelerator if possible. Replace the accelerator pedal if necessary. Refer to the OEM service manual.
 

Injector is malfunctioning

Replace the malfunctioning injector. Refer to Procedure 006-026 in Troubleshooting and Repair Manual, Signature/ISX/QSX Engines, Bulletin 3666239.

 

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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