why is my v10 screeching ?

Asked by Guru9DR64R Nov 14, 2020 at 05:54 PM about the 2002 Ford F-250 Super Duty Lariat 4WD Extended Cab SB

Question type: Maintenance & Repair

truck on screeches above 20km an hr . I don't
think its the belt because I've heard belts before
an this sounds like something else and it doesn't
happen when idling only when driving faster than
20km an hour

2 Answers
159,825

Bob answered 4 years ago

Take the belt(s) off and briefly start the engine. If the screech is gone it is the belts or something the belts turn. If it still screeches it may be something in the timing chain system. My guess is a bad belt idler, tensioner or A/C compressor bearing.

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