Hmm. Not what i expected for a tensioner, i really have no long background with repairing cars, i bought a 93 lincoln about 3 or 4 months ago and have been learning on that car. My tensioner actually directs the belt, and has a pulley on it. So does my idler pulley, which just directs the belt, which is pretty much what the tensioner does on my car, and i just bend it with a breaker bar to loosen or tighten it. Does your car have automatic timing out of curiousity? I was told by my buddy not all cars are that easy to remove the belt and put it back on, if the timing is not automatic, although i'm not sure about that so i'm just throwing it out there just incase. Really inspect everything that is along your belts route though, all the pulleys that the belt runs on, and try to see if the squeak is actually coming from the alternator. When i put mine on there, it wasnt stretching tight, but it looked like its not coming off at all or going to have any problems staying attached. My tensioner adjusts itself though pretty much, once i let go of the breaker bar.