You didn't specify which car (of those you listed) and more important, the age (years, miles). Nevertheless, you might want to consider:

1) changing the timing belt again, too -- you've gone so far to replace the tensioner, whereas the timing belt is just a few dollars more and almost no extra effort (because when you replace the tensioner, the timing belt will probably slip and you'll probably have to reposition it anyway).

2) remove the "gears" (pulleys ?) to inspect the three shaft seals for signs of beginning leaks -- and replace them accordingly.

3) at this point, having "opened her up" to do the above, you might want to replace the water pump and drive belts (alternator's, A/C's, and P/S), too.

Heck, the last time I changed the timing belt, I did all of the above and also changed the mounting bushings of the alt., A/C, and P/S, as well as the fan's clutch, too. I had taken the time (and very little effort) to pull the radiator (to have lots more room to work), and it seemed a shame not to renew everything in that area. Consider it.