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December 1, 2001 Service bulletin

Some vehicles equipped with 4.6L engines may exhibit a high frequency whine noise (hair dryer type noise),...

Ford technical service bulletin 15489 for 2002 Ford Explorer and 2002 Mercury Mountaineer.

Bulletin number
15489
Component
Engine and engine cooling: engine: gasoline
Summary
Some vehicles equipped with 4.6l engines may exhibit a high frequency whine noise (hair dryer type noise), that lasts for 30-60 seconds after cold start. Tt

Owners of these vehicles have filed 248 complaints in the engine category.

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