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2000 Chevy S-10 2000 S-10 AC Rattle Noise

Tiny
BRANSCOP
  • MEMBER
  • 2000 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 113,000 MILES
I just got a 2000 S10 p/u. When you turn on the A/C there is a rattling noise coming from underneath the engine compartment. Also when driving at highway spped and go up an incline in the road the engine seems to loose power and does not maintain speed.
Any thoughts or suggestions? AC Compressor?
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Friday, August 20th, 2010 AT 7:40 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
What I need you to check is the exhaust. Many times heat shields will come loose. With the AC on, the engine is under more of a load which can cause the shield to rattle. Also, the inside of the catalytic converter can come loose and rattle. That could explaine the power loss at times.

Take a rubber mallot and tap on the exhaust system to see if you can duplicate the sound.

Let me know what you find.
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Friday, August 20th, 2010 AT 9:22 PM
Tiny
BRANSCOP
  • MEMBER
  • 2 POSTS
The heat shield seems fine. No movement or rattle/noise when I tap it. The rattle does seem that it is coming from where the exhaust connects to the engine.
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Saturday, August 21st, 2010 AT 1:13 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Did you check the catalytic converter?
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Saturday, August 21st, 2010 AT 9:36 PM
Tiny
ALDOUS11
  • MEMBER
  • 1 POST
That is really a impressive topic. Thank you for sharing this with us...
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Monday, September 6th, 2010 AT 6:17 AM

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