Belt tensioner keeps going bad

[MetalVamp26]

I'm wondering if anyone else is having this issue or if someone has come up with a solution for this. I've replaced the blet tensioner twice in a short span of time. I'm not sure why they keep going bad. The first one was an OEM AC Delco and I believe the 2nd one was Gates or Dayco.
Any thoughts?
I've seen a thread where someone put a larger pulley on the tensioner and thar seemed to fix it but I'm not sure which one I have. I do remember seeing 2 different size pulleys at some point but that my have been SL1 vs SL2.
For clarity, I have a 2002 Saturn SL1

 

[Nutjob1]

In general Saturn belt tensioners should have around 50 lbs of tension. Serpentine belts should feel banjo tight, not flopping with engine idling.

 

[Derf]

Avoid the aftermarket Gates tensioner. OEM is best

Also, you may have addl wear due to a bit of slippage.

The bearings on one of your pulleys may be going bad. I would check for bearing play by removing the the belt and rotating each pulley by hand, checking for excessive play or excessive drag.