4.0L V6 engines may develop a buzzing type noise from the upper engine area at about 1900 RPM, under light acceleration. Our technicians tell us this can be caused by loose ignition coil bracket bolts. Coil bracket bolts should be checked for the correct torque before further diagnoses is performed.
Buzzing Type Noise From Upper Engine Area on Ford Mustang GT
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2008 Ford Mustang GTVisitor
When the engine is on buzzing noise is in effect.. I herd 4.6 is known for this noise
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