Bottom line: Put the winter cover on when you plow.
TSB 09-6-8
04/06/09
6.4L AIR INDUCTION SYSTEM RESTRICTION -
SNOW - BUILT ON OR BEFORE 3/16/2009
FORD:
2008-2009 F-Super Duty
This article supersedes TSB 9-4-7 to add a production fix date.
ISSUE
Some 2008-2009 6.4L F-Super Duty vehicles built on or before 3/16/2009 may experience a lack of power during acceleration and perhaps the illumination of the check air filter message in the instrument cluster message center. The lack of power condition may occur when the air filter element becomes packed with snow, thereby restricting required air flow to the engine.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1. For vehicles built before 9/18/2007 provide a Winter Grill cover to the customer.
2. Replace the electronic Filter Minder Indicator if the vehicle does not have engineering part number 8C34-9N622-AB level installed.
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3. Remove auxiliary snow tube. (Figure 1 - Item 1)
4. Remove the air box filter cover. (Figure 1 - Item 2)
5. Replace the air cleaner element only if wet or frozen.
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6. Attach the snow deflector gasket. Ensure the gasket is securely attached to the rim of the air box. (Figure 2)
7. Install air box cover.
8. Install auxiliary snow tube.
9. Verify the plastic breather box on the end of auxiliary snow tube does not contact turbocharger heat shields.
NOTE THIS PROCEDURE IS INTENDED FOR USE ON VEHICLES OPERATED IN COLD WEATHER STATES (AK, CO, ID, IA, ME, MI, MN, MT, ND, NH, NY, SD, VT, WI, WY) AND CANADA.
NOTE THIS WINTER GRILL COVER MUST BE REMOVED WHEN TEMPERATURES ARE GREATER THAN 50 °F (10 °C) (32 °F (0 °C) WHEN TOWING) OR ENGINE DAMAGE CAN RESULT. THE SNOW DEFLECTOR GASKET MAY REMAIN INSTALLED IN THE VEHICLE YEAR-ROUND.
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WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT : Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
090608A 2008-2009 F-Super Duty 0.4 Hr.
6.4L: Install Grill Cover,
Snow Deflector Gasket,
Replace Filter Minder And
Air Filter If Necessary (Do
Not Use With 9601A)
DEALER CODING
CONDITION
BASIC PART NO. CODE
9601 55
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