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Abnormal Noise from Compressor

WARNING: This page is about a different car, the 2007 Suzuki Grand Vitara and 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
ABNORMAL NOISE SYMPTOM DIAGNOSIS OF A/C SYSTEM - COMPRESSOR

Condition Possible Cause Action
During compressor operation, a rumbling noise is heard proportional to engine revolutions  Inadequate clearance in scroll area Replace compressor  .
A loud noise is heard at a certain RPM, disproportionately to engine revolution  Loose or faulty compressor drive belt Adjust drive belt tension or replace drive belt  .
Loose compressor mounting bolts Retighten mounting bolts  .
A loud rattle is heard at low engine RPM  Loose compressor armature plate bolt Retighten armature plate bolt. Replace compressor if it was operated in this condition for a long time  .
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