1997 - 2003 F-150

4.9L - Belt squeals when thermostat opens

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Old Dec 12, 2008 | 03:37 PM
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From: WI
4.9L - Belt squeals when thermostat opens

Would anyone know why the belt squeals for a few seconds when the thermostat opens? I discovered this by keeping a close eye on the temp. gauge.

Water pump on it's way out?

Coolant was flushed ~20,000 miles ago.

Belt getting old?

246,000 miles

Mods: - Wrong forum- please switch to pre 97!!!
 

Last edited by 4x4Ranger; Dec 12, 2008 at 04:08 PM.
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