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#1
12-19-2001, 02:02 PM
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W126 M103 air pump
The air/smog pump in my 91 300SE makes noise when it's engaged. A rattle similar to that of an old AC compressor, not bone tingling timing chain or valvetrain clatter. Does this mean it's on its way out, already failed, just old? Is it likely to sieze and throw the belt or just get noisier?
Thanks, Sixto 91 300SE 81 300SD 
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