New Holland 3369 – ECM: Torque Reduction Due To Smoke Reduction

The Engine Control Module (ECM) has detected a condition that would lead to excessive visible exhaust smoke (soot) due to an imbalanced, rich air-to-fuel ratio. As a protective measure to limit emissions and prevent engine damage, the ECM overrides the operator's torque request and reduces fuel injection, resulting in a reduction of engine torque. This is an informational code pointing to an underlying incomplete combustion issue rather than a specific component failure.

• T7 Series
• T7.220
• T7.235
• T7.250
• T7.260
• T7.270
• T8 Series
• Tractors with FPT engines

1. 1

   Check the ECM for any other active or stored fault codes, as code 3369 is often a reaction to another specific component failure

2. 2

   Inspect the air filter for dirt and restrictions (most common cause of insufficient air for combustion)

3. 3

   Check the air intake piping for any blockages or leaks between the filter and the turbocharger

4. 4

   Check fuel quality for water or contaminants using the fuel/water separator

5. 5

   Inspect fuel filters for clogs or dirt that could restrict fuel flow

6. 6

   Check fuel injectors for faults or clogs causing poor fuel atomization and improper spray patterns

7. 7

   If equipped, inspect the Exhaust Gas Recirculation (EGR) valve to see if it is stuck or clogged

1. 1

   Replace air filter

   If the air filter is found to be dirty or clogged, replace it with a new, genuine OEM filter. This is often the simplest and most common solution.

2. 2

   Service fuel system

   If the fuel is contaminated, drain the fuel tank and refill with clean, high-quality diesel. Replace any clogged fuel filters.

3. 3

   Clean or replace fuel injectors

   If faulty fuel injectors are suspected, they may need to be professionally cleaned or replaced. This may require specialized tools.

4. 4

   Clean or replace EGR valve

   If the EGR valve is suspected, remove and inspect it for carbon buildup. Clean using a carburetor cleaner and a wire brush. If the valve is damaged or does not operate correctly after cleaning, replace it.