Cummins ISX11.9 CM2250 – Service Manual Engine Starts But Will Not Keep Running

Electronic fault codes active or high counts of inactive fault codes

Refer to Section TF in the Fault Code Troubleshooting Manual, Bulletin
4022225.

Idle Shutdown or PTO Shutdown features are activated

Turn OFF the keyswitch for 5 seconds. Turn ON the keyswitch and check fault lamp operation. Use INSITE™ electronic service tool to check the Idle Shutdown and PTO parameters.

Fuel level is low in the tank

Fill the supply tank. Refer to the OEM service manual.

Battery voltage is low

Check the batteries and the unswitched battery supply circuit. Refer to
Procedure 019-087 in Section 19
.

Fuel inlet restriction

Check for fuel inlet restriction. Refer to
Procedure 006-020 in Section 6
.

Air in fuel system

Bleed the fuel system and correct the source of the leak. Refer to
Procedure 006-003 in Section 6
.

Keyswitch circuit is malfunctioning

Check the vehicle keyswitch circuit. Refer to
Procedure 019-064 in Section 19
.

Fuel grade is not correct for the application or the fuel quality is poor

Operate the engine from a tank of high quality fuel. Refer to Procedure 018-002 in Section V of the Operation and Maintenance Manual, ISX11.9 CM2250, Bulletin 2883444.

Vehicle parasitics are excessive

Check for transmission malfunctioning, cooling fan operation cycle time, and engine-driven units. Refer to the OEM service manual.