2005 Chevy Cobalt Low power

2005 CHEVROLET COBALT
100,000 MILES • 6 CYL • FWD • AUTOMATIC
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MARKLORI
  • MEMBER
  • 1 POST
As I excelarate the car makes a humming noise and dies down when I come to a start. I noticed the car does not put out the power it used to and labors to get up to 65 miles an hour on the highway
May 9, 2010 at 4:39 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Hi there,

In a case like this it is always best to do the simple things first, start with a full tune and scan for any unresolved fault codes, check all belts and pulleys for worn components re the humming noise, i am presuming that this noise is constant with engine speed?

Mark (mhpautos)
May 9, 2010 at 6:46 PM
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