N14 Base Engine Troubleshooting and Repair Manual – Engine Decelerates Slowly (CELECT™ or CELECT™ Plus)

Electronic fault codes active or high counts of inactive fault codes

Refer to Section TF in the Troubleshooting and Repair Manual, CELECT™
Plus Systems, Bulletin 3666130, or Section T in the Troubleshooting and Repair Manual, CELECT™ Systems, Bulletin 3666084.

Throttle linkage or return spring is binding

Check the fuel pump throttle linkage and return spring for free movement. Adjust if necessary.Refer to the OEM service manual.

Electronic control module (ECM) calibration is malfunctioning

Verify the ECM calibration is correct. Check the calibration revision history for applicable fixes to the calibration stored in the ECM. Refer to the calibration history spreadsheet Click here to see ecm_calibration_rev_history.xls

on QuickServe® Online or the INCAL™ CD-ROM. Compare the calibration stored in the ECM with the engine rating and the Control Parts List (CPL), Bulletin 4021326 or 4021327. If necessary, recalibrate the ECM. Refer to Procedure 019-032 in the Troubleshooting and Repair Manual, CELECT™
Plus Systems, Bulletin 3666130, or the Troubleshooting and Repair Manual, CELECT™ Systems, Bulletin 3666084.

Injector is malfunctioning

Perform the automated cylinder performance test. Replace injectors as necessary. Refer to Procedure 006-026.

Fuel pump pulsation damper is cracked

Inspect the fuel pump pulsation damper. Replace the pulsation damper if necessary. Refer to Procedure 005-011.