How to replace belt tensioner on 2005 dodge neon

SOURCE: replacement of belt tensioner

Hello
Welcome to FY,
Your tensioner is replaced as a unit,
remove the belt.
there is a nut 15mm that holds the tensioner to the engine, the tensioner and pulley comes off together the new one will have a pulley on it too, install the ne one the same as the old one came off. i would replace the belt too.
RD

SOURCE: removal of tensioner pulley in a 2003 Dodge Neon

the tensioner is part of the engine mount bracket..not serviced seperately as far as i know

SOURCE: Belt Tensioner replacement

A simple bolt on assembly, the tensioner for the serpentine belt may need replacement if it fails to smoothly pivot and maintain tension on the belt.

Using a half inch breaker bar, release tension by rotating against the spring, remove the belt from the tensioner. Unbolt the tensioner (one bolt may be so diffucult to reach that you might want to use a racheting open end wrench by Alden.
Install the new tensioner by reversing these steps.
I usually replace the belt at the same time.

SOURCE: how to replace belt tension pulley for dodge neon 2002

The power steering and A/C belt is tensioned by a tensioner pulley. Mine went bad and was "screaming" I thought it was the power steering pump and I replaced it only to find that it wasn't the problem. I couldn't find any bolts and deemed it too much of a problem for me to replace at home. The shop had to drop the engine and transaxle assembly from the engine bay in order to get enough room to replace the pulley. The problem with many FWD cars is having enough room to work so if you have to replace it, the engine has to move because you only have about two inches of room otherwise.