Agreed...if the WD-40 stops it then you know what to fix. You can also take the tension off the belt and if the tension pulley is bad, they will typically woble from slack in the bearing.chunk and reel said:The WD-40 will only be a temporary fix. Your better off just replacing the pulley. They are very easy to take off and very inexpensive. I was fortunate enough to hitch hike 15 miles one day because I figured the WD-40 was all it needed.
I agree. My old '99 Z-71 was making the whining noise for alittle over a week and the tension pulley finally gave way. It was a few years back but I bought a new belt and pulley for about $125 give or take. Very easy fix but when the pulley goes out don't drive it. The truck will start to overheat within a matter of minutes.bwguardian said:This turns out to typically be the tensioner pulley (keeps tension on the belt). Spray some WD-40 in the bearing...cener portion of the pulley (while the engine is off) and see if that stops it.
Yep, release the tension on the belt, remove the pulley assembly, and replace. You may be able to replace the bearing only instead of the whole assembly. It is an easy fix, so do it sooner than later as it will leave you stranded and cost more to fix once it decides to let go.Gilbert said:ok, the wd-40 fixed the noise. guess its time to replace the pully before it goes out. Thanks for all the replies.