Smog/Oxygen pump making strange noise

12-26-2006, 09:14 PM
Is it really necessary? Someone told me I could just take the belt off of it and it wouldn't affect anything ; that it was just an emissions component? Is this ok to do? 1991 Ram w/ 5.2 318

12-28-2006, 03:08 PM
i have removed the belt off of other vehcles thet used V belts and it was all good. and ya its only for emmisions as far as i know. I'd bypass it before replacing it myself cuz they r pretty pricey.

12-30-2006, 11:00 PM
We have a 91 with 5.2 also, and the air pump has always made some racket. No grinding or anything though.

01-04-2007, 09:04 PM
You should be able to purchase a rebuilt unit at a parts store. In an emission area you won't get a tag without one. You can also go to a scrap yard and look for a rebuilt unit.

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