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2002 Buick Century noisy at idle only

Tiny
TENSK456
  • MEMBER
  • 2002 BUICK CENTURY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 89,000 MILES
When the engine is ideling, I hear a noise similar to a slapping noise. When the RPM increases, the noice is gone. The performance of the engine is great. It almost sound as if perhaps the timing chain may be slapping or rubbing?
Tuesday, August 31st, 2010 AT 8:28 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Take a piece of chalk or crayon and go to the harmonic balancer and draw a line from the center bolt, all the way to the outside edge. Start the car for a second and re-examine the line and see if the line is broken to indicate a broken harmonic balancer.
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Tuesday, August 31st, 2010 AT 9:21 AM
Tiny
TENSK456
  • MEMBER
  • 2 POSTS
I checked the harmonic balancer with a chalk line and did not notice any movement. Any other possibilities?
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Tuesday, August 31st, 2010 AT 11:36 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
There are plenty of other possibilities but you're going to have to determine where the noise is originating from.
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Tuesday, August 31st, 2010 AT 11:53 AM

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