86 deville vacuum motor noise?

[frock 52]

I recently got hold of a really clean 86 deville. Kept hearing a low hammering noise and found the vacuum motor up in front of the drivers front tire.Didn't take a rocket scientist to figure out what it does as it's actually posted on the radiator support vacuum routing sticker under the hood.BUT--- Does anyone out there know how loud the pump should actually be?? I went to a chevy deaker and they quote "don't stock the part anymore " and none of their mechanics are familiar with the set up! NAPA has the pump but at 179.00 I hate to replace it iof noise from it is normal. It still works as my power brakes are fine ect..Any ideas about this would be appreciated!
Thanks frock52

 

[PMT]

Just disconnect it.
I did 3 or 4-years ago. It is an air pump for emissions.

I have had this car for 10 years and have 290,000 miles on it. Replaced the motor at 180,000, had a bearing rap. There are other things I can tell you about if you want to know?

I have replaced the ECM about 5-times it affects the Torque Converter Clutch at higher speeds and causes the service soon light to come on, one time it caused the engine to shut off as I was driving, turned off key and it restarted it did this three times before I replaced it (cost $75 remanufactured) and the Idle speed control 3-times, it sticks (costs about $45). There is more! E-mail is pkthomas@msn.com

 

[PMT]

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