Are both tensioner pulleys for my Eclipse the same?

I recently found out how my eclipse belt system works. There is an accessory belt that runs the power steering and a/c I think. The problem with my car is that the tensioner for the accessory belt is no good anymore and I need a replacement one. What I was wondering is if the timing belt tensioner and the accessory belt tensioner for my car are the same thing and if so then I would be able to buy a timing belt tensioner to replace my bad accessory belt tensioner. The only reason I ask this is because I have not been able to find one accessory belt tensioner for this car and was starting to think this. Am I right what should I do?