My 94 wagon squeals at start up and gets louder when driving. Could it be the drive belt?

 

Most likely the serpentine accessory drive belt has been glazed and squealing. Check the belt surface and if glazed, replace the belt with OEM (Continental) , and I would replace the belt tensioner as well.

Also, inspect the timing belt just in case. It should not squeal as the t-belt is cogged, but I would inspect it just in case. One of the pulleys in there may be squealing if the serpentine belt turns out fine.


JPN

 

Follow JPN's advice. Additionally, you may want to try a can of belt dressing. Spray it on the surface of the belt and it many cases it will stop the squealing (if it is the belt that is causing it and not a bad pulley)

 

Can the tentioner be tightened?

 

No, not that I know of