Squeaky alternator, could that cause other problems?

[85Dan85TType]

I assume my tensioner is going bad, but I wanted to check. My alternator is also quite squeaky. Could that cause enough resistance occasionally to make the tensioner jump? It seems somewhat logical, especially since the tensioner feels normal otherwise. It only seems to happen at or around idle. Thanks in advance!

 

[turbo nasty]

Look and see if the tensioner is running in its window of operation there is a lil window and mark. Could be from a .5 inch too long of a belt... several parts places have one a lil too big listed as correct.

 

[85Dan85TType]

Didn't even realize the window thing. Thanks!

I'm using A/C delete, so I stepped down to a 63" belt, stock is 63.5? FWIW, I did put on a 62.5 and had the same issue.