Chirp or Squeak Noise from Engine Area on Initial Start Up on Ford F-350 Super Duty

A defective idler pulley and / or belt material can cause a chirp or squeak noise from the engine area on initial start up. The idler pulley and / or belt will need to be replaced with revised parts.

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Average mileage: 185,000 (70,000–300,000)
Engine affected: 6.4L V8 Diesel Turbo
3 model years affected: 2008, 2009, 2010
5 people reported this problem
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problem details
2009 Ford F-350 Super Duty - 6.4L V8 Diesel Turbo 300,000 mi,
Had new engine put in truck they said that idler pulley was going out (I think it was just fine) they replaced it and I have replaced the belt twice and it still chirps when the name tag imprinted on the belt goes across the pully