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Old 12-19-2001, 02:02 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745
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?

91 300SE
81 300SD
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