My wife's 81-300SD started (all of the sudden) making a loud rattle from (I think) the vacuum pump. If the vacuum pump goes out, what happens and does it make a loud rattle? If it is not the vacuum pump, what else in the area would cause such a rattle? It is not a belt or the fan.

Thanks...as always.

Don

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84-300D 256K
81-300SD 217K (Wife's)
79-300CD 212K - Project
89-Volvo 245 305K