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Serpentine belts have an idler pulley and an automatic belt tensioner - either one of these could have gone bad and could cause the smoke. The idler pulley has a bearing inside that can seize, stopping the pulley from turning which would cause the belt to fray. The tensioner keeps the belt tight and when they go, the belt hangs loose, causing the belt to burn on the other components. The Alternator also runs on that belt, as well as the a/c compressor and other components, depending on the particulars of your car ( make, model, engine, accessories, etc.) and the main bearings can be bad there too. There are actually several key components running off the belt and, without being there, I cannot accurately diagnose the issue. I recommend you go to a reputable shop. The type of smell in the burning would guide me to what to check - there are many things that can cause these symptoms. If that mechanic only changed the belt but did not investigate the cause I personally would not go back there.
I'm sorry i couldn't offer anything more concrete to help - hopefully I've given you some directions to look!
Hope this helps!!
Try downloading the Owner's Manuel online for free. My Buick owners manual has really detailed info on how to put the serpentine belt back on. There are several websites where you can read and or download the owners manual.... Hope this helps!
I have a 91 dynasty a 3.3l I just change the serpentine belt you need to buy a tool serpentine belt tool kit from harbor feight tools item # 66344 I bought mines on sale for $16.99. And also
make sure you got the right belt size for your car it list three belts
that will fit because my car was built before feb.17 1991. I was giving two wrong belts before I got the right one talk about hell on earth. had to change my alternator water pump that was the easy part.
I hope this help
support engine. remove coolant reservoir. remove serpentine belt. remove serpentine belt tensioner. remove bolts from mount. carefully raise engine up and move mount out of the way.(hard to explain and this is hard to do you have to have the engine in the perfect position and whatnot) remove the top plastic cover. with 19mm socket rotate engine clockwise until hole in cam lines up with hole in head. insert vw special tool to hold cam. remove the 4 6mm bolts on crank pulley. remove plastic covers. with white paint, mark belt to cam and belt to crank. loosen tensioner. remove belt. transfer marks to new belt. strongly suggest replacing water pump. reinstall t-belt. put the tensioner somewhat tight. rotate the engine fully twice. loosen tensioner bolt and adjust to perfect tension using needle and v-groove on adjuster. install is reverse of removal.
Diagram should be under the hood
The auto tensioneris down low and dificult to get to.
If it has not been changed in a while you will need a long thin push stick and a serpentine tool.
Push on the belt hard at the auto adjuster and pop the belt off the smooth pully (located top).
hook up the serpentine belt tool and then mount the new belt
is the a/c working ok??? shredding the belt may be cause by the a/c compressor problems. the "chunk" maybe not, but shredding tells me something does not spin when it should. I dont know why the mehanic put a new pump on that had a problem with the pulley, it should be smooth. anyhting that the belt runs should be smooth and east to turn, make sure that all of the grooves are clean, no remnants of the old belt.