What is causing this pinging noise?

2006 CHEVROLET SILVERADO
7,500 MILES
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U_RYOUNG
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  • 2 POSTS
I have a 2006 chevy silverado 1500 4.3 v6. I had two check engine codes. The first one was for the oxygen sensor in bank 2. I replaced the sensor and the code went away. The second code was from multiple misfires. I changed the cap, rotor, and wires and this made that code go away. Now there is a loud pinging noise coming from the passenger side of the truck. There are no check engine lights on anymore. What could cause the pinging noise?
Jun 1, 2012 at 3:27 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
You need to find out where the noise is being emitted from for us to be able to assist you.
Jun 1, 2012 at 3:38 PM
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U_RYOUNG
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Seems from the general area of the flex plate. My thoughts are it could be the cat in the y-pipe.
Jun 1, 2012 at 3:44 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
It is possible as misfires can cause the cat to go bad due to overheating if excessive fuel had been discharged to it for extended periods.
Jun 1, 2012 at 7:52 PM
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