Originally Posted by Ford04Ranger4.0
I think there was a write up on here about the 3L having a belt tensioner problem.
There was one a couple years ago where someone found the tensioner pulley sat at a slight angle in relation to the rest of the pulleys.
Can't find the thread , but I do remember he placed a shim washer on the locator stud (not the mounting bolt) when installing it and it brought the pulley into alignment.
I'm trying it on mine this weekend .