Cold Weather Belt Chirp - 2008-2009 Ford F-Super Duty

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6.4L DIESEL – COLD WEATHER BELT CHIRP

2008-2009 F-Super Duty vehicles equipped with a 6.4L diesel may exhibit a front end accessory drive (FEAD) belt chirp when initially started following a cold soak.

SERVICE PROCEDURE

On 2008 model year vehicles built on or before 11/9/2007 and equipped with single alternator, replace the idler pulley. (Figure 1)

Figure 1

On 2008 model year vehicles built on or before 11/9/2007 and equipped with dual alternator, replace the idler pulley. (Figure 1)
On 2008 and 2009 model year vehicles equipped with single alternator, replace the main FEAD drive belt with a new service belt that has an improved noise resistant rubber compound.