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I had both noises...
Posted by Joe98 (more from Joe98) on Wed, 6 Aug 2003 07:37:24
In Reply to: 97 Aero Engine Noise - two different sounds..., John Whiteley, Wed, 6 Aug 2003 05:26:39
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but now they are gone since I replaced the serp belt and both nylon pulleys (tensioner and idler) 1K miles ago.
I'm certain the noises came from the pulleys, since I would try to find the sounds when they occurred, and they both seemed to have been coming from the tensioner pulley. And just like you, they only happened upon initial start-up.
But as TKC stated, if your ACC is set to AUTO upon start-up, that makes the compressor kick in, and could be causing one or both of the noises since that puts extra strain on the serp belt (which also puts strain on the pulleys). Try re-programming the ACC system to have ECON upon start-up (set the system to the settings you want, then press and hold the top-most and bottom-most buttons on the right-hand side until the display darkens and re-lightens again).
Joe
'98 69K
posted by 12.111.48...
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