I had new belts put on my 380SE( 5 belts total) The one that occasionally makes a banshee squealing is the A/C compressor belt.I have to loosen the pulley and increase tension to stop the squealling. Have had to do this a couple of times since evidently I just can't put enough tension and tighten singlehandedly, so will solicit wife's help next time or might hae to get new pulley.

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95 E420 ( 76K) SOLD
85 380SE(125k)
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