2003 Volkswagen Jetta humming sound

2003 VOLKSWAGEN JETTA
53,500 MILES • 4 CYL • AWD • AUTOMATIC
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MINNAB1
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  • 1 POST
My car recently began making a loud humming sound when the defrost or heat is on and when really cold the car shakes...
Jan 16, 2009 at 8:30 AM
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2CARPRO JACK
  • CAR REPAIR CONTRIBUTOR
  • 11,533 POSTS
The humming may be the blower motor having trouble, does it change pitch with the speed of the blower motor? The shaking ..does it go away when the engine is warmed up? does it feel like a vibration in the car or is it making the engine not want to accelerate
Jan 16, 2009 at 4:38 PM
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