5397620NX | Genuine Cummins® Ignition Control Module For ISC/ISL

Control ignition timing

Determines when the spark plug fires
Ensures combustion happens at the correct moment in the engine cycle

Trigger the ignition coil

Sends signals to the ignition coil to generate high voltage for the spark plugs

Improve engine performance

Proper spark timing results in smooth running and better power output

Increase fuel efficiency

Accurate ignition timing ensures complete fuel combustion

Reduce emissions

Correct ignition control reduces unburned fuel and exhaust pollutants

Support reliable engine starting

Helps the engine start quickly and consistently

1. Engine won’t start or hard starting

• Engine cranks but does not start

• Intermittent starting problems (starts sometimes, not others)

2. Engine misfires

• Rough running

• Jerking or hesitation during acceleration
  

3. Engine stalling

• Engine may stall while driving or at idle

• Often stalls when hot and restarts after cooling down

4. Loss of power

• Poor acceleration

• Engine feels weak under load

5. Check Engine Light

• ECU detects ignition timing or coil control faults

• Ignition-related diagnostic trouble codes (DTCs)

6. Poor fuel economy

• Incorrect spark timing leads to incomplete combustion

7. Backfiring

• Loud popping noises from intake or exhaust