RATTLE on 2005 GMC Envoy

i HAVE A RATTLE WHEN THE AIR COMES ON CHANGED THE IDLER TENSIONER AND REPLACED THE WATER PUMP CAUSE A FREIND HAD 2005 ENVOY HIS RATTLE LIKE THIS SAID IT WAS PUMP.WHAT DO YOU THINK IT MIGHT BE?DO YOU THINK WHAT I HEAR MIGHT BE THE A/C CLUCTH?

by in Charlotte, NC on February 25, 2013
1 answer 2 comments
ANSWER by on February 25, 2013
yes it could be a comp clutch does the noise go away when you remove the belt?
COMMENT by on February 26, 2013
yes I think it dose it will queiten down when I push down on the belt tensioner
COMMENT by on February 27, 2013
did you replace the belt when you changed the tensionr
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Temp gage quickly reads 200 within minutes. Not overheating or signs of any leakage. Does make rattling noise. I replaced the belt tensioner and idler pulley. Still making that rattling noise.

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