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whine/grinding noise 200

posted by  someone claiming to be buttervolvo on  Sun Feb 6 04:53 CST 2005 [RELATED]

Sounds like the AC belt to me. I had a similar sound on my 1990 240DL.
Open the hood and take a look at the angle between the AC pulley and the
crankshaft pulley. If the two pulleys are not aligned correctly the
belt will make some noise, mine didn't squeal, it made the sound you
are describing. It's not as bad as it looks - 30 minutes to an hour to do.
Loosen power steering pump 13mm/10mm. Loosen AC compressor,
get the back bolt with a deep 13mm socket and some creativity.
Remove the splash pan, check the AC compressor bracket bushings.
Loosen lower bolts, re-align the compressor and tighten everything up.
It can be tricky to get the alignment just right, I had to do it two times before I got
the correct angle.





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