trying to release serpentine belt but can not locate the belt tension er so i can replace the water pump.

 

It is hex shaped lug just to the inside of the tensioner pulley. The tensioner pulley is the one that is not part of any accessory or the idler pulley which is the higest one. the tensioner is just left of the water pump or right of water pump when standing in front of the engine. Find a socket that fits the hex shaped lug and use a breaker bar with the socket. With the breaker bar pointing up, pull the breaker bar towards the passenger side of the car. the belt will losen and you can pull the belt off of one of the pulley's such as the alternator or ideler pulley. Before taking it off, make a drawing of the how the belt is routed. Hope this helps.

 

A picture of the tensioner on an NA can be seen in this post.
https://www.crossfireforum.org/forum...tml#post610912