KNOCKING AND SQUEALING NOISE

  • Tiny
  • tylerscottstivers
  • 2003 Pontiac Bonneville
  • 160,000 miles

2003 pontiac bonneville se (not supercharged)
I have a knocking noise coming from the rear of the enging. I have tried letting up the tension on the belt but the noise did not go away. Now the weird part I have a loud squealing noise coming from the bottom portion of the engine. Whats weird about it is when I pull the dip stick out and it sucks air into where the dip stick goes the noise stops completely. Im stumpped please help!

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Saturday, September 29th, 2012 AT 9:58 PM

1 Reply

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 posts

You have something wrong internally. It could be a bearing or a piston.

Did you run it low or out of oil?

Roy

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Saturday, September 29th, 2012 AT 10:00 PM

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