How can you check if the tension assembly for the serpentine belt needs to

[Pascha]

be replaced in an Oldsmobile? I had the water pump replaced (under warranty) because it was leaking/spraying. The mechanic said I had to replace the serpentine belt, too, because when antifreeze gets on it, it will no longer work well. So, I agreed to that. The belt was not covered by warranty, but I figured it was good insurance to change it. When I picked up the car, I was told that the tension assembly for the serpentine belt was also wearing out and that I should replace that also. That also would be not covered by the warranty. Is it likely that there is this problem also? How can I check that there is a problem with the tension assembly without just taking the word of the mechanic?

 

[eddood52]

Usually you can tell if it makes a squeaking noise, indicating the bearings or bushings are wearing out. You can normally pull it back by its spring and rotate it. If it doesn't free-wheel, try squirting some WD-40 or a little oil near the hub and try again. If that doesn't work, you can probably bet the bearings are bad. It's pretty common to find one in your local junk yard, because I believe this assembly is common to many GM cars.

 

[gleelogan]

1--if your water pump was leaking, you probably only needed a gasket...nice it was under warrantyu.
2--anti-freeze on a belt WILL NOT RUIN IT, belts are constantly bombared with junk all of the time, the mechanic lie to make money, he probably cleaned it!
3--tension on a serpentine belt does not wear out...you need a real mechanic..someone who not trying to get all the money out of you...tension on a belt is spring loaded....--stick a rular down next to the belt..start the belt at a number, make it level as possible, push it down with your finger..usually 1/4 to 1/2 inch play...when u push down.....