Some did, some didn't. It depends..If you get under the hood you should see these items with pulleys.
1. power steering pump
2. belt tensioner idler pulley
3. A/C compressor pulley
4. alternator pulley
5. water pump pulley
If you have a sixth pulley, then it's an air pump. Yes air pumps can get noisy. If it's knocking, put your hand on the housing, you should be able to feel it.
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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.
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