How do you release the tension from the serpentine belt tensioner for a 2005 dodge grand caravan?

Videos on how to replace it.

https://www.google.com/search?q=2011+dodge+grand+caravan+serpentine+belt+replacement

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Tensioner badly adjusted or pulleys are misaligned.

Take it back to the shop and ask them to fix the tension under the repair warranty.

There should be enough tension that the belt can't jump the pulleys. There is a small chance is is misrouted.

https://www.2carpros.com/diagrams/dodge/grand-caravan/1994

https://www.google.com/search?q=94+dodge+grand+caravan+serpentine+belt+diagram

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Fig. Fig. 11: Accessory drive belt adjustment-3.3L and 3.8L engines
All of the belt driven accessories on the 3.3L and 3.8L engines are driven by a single serpentine belt. The belt tension is maintained by am automatic tensioner.

1. Disconnect the negative battery cable.
2. Raise the front of the vehicle and safely support it with jackstands.
3. Remove the right front splash shield.
4. Release tension by rotating the tensioner clockwise.
5. Remove the belt and install a replacement.
6. Proper belt tension is maintain by the dynamic tension.
7. Install the right front splash shield. Lower the front of the vehicle.
8. Connect the negative battery cable

Click on the following free direct Link.
It has the correct Belt Diagrams for your 1992 Dodge Grand Caravan wirh either the 3.0L SOHC V6 or the 3.3L V6.

http://www.2carpros.com/car_repair_information/year/1992/make/dodge/model/grand_caravan/1992_dodge_grand_caravan_drive_belt_routing_diagram.htm

Included on the Diagrams are the Instructions on "Rotating" the Automatic Tensioner. See Below for additional Instructions to make your job easier.

"HOW TO": I professionally prefer the Serpentine Tensioner Tool.
Standard Rules to Removal the Serpentine Belt with an Automatic Tensioner:
1. Find the Tensioner(s).
2. Using a Serpentine Belt Tensioner Tool, Or Wrench OR Ratchet, Rotate/Move the Tensioner USING THE AVAILABLE NUT (located on the Pulley or Arm Base) OR the OPENING (3/8ths or 1/2 inch square opening located on the Tensioner Arm) rotating the Tensioner Pulley/Arm - moving it away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.
3. Remove the loosened belt off one of the other more easily accessed Pulleys.
4. DO NOT quickly release the Tensioner, but gently allow the Tensioner to rest in its closed position.

Standard Rules for Installing the Serpentine Belt with an Automatic Tensioner:
a. Pick a Pulley that is most easily accessed. This will usually be on top. This will be the last Pulley that the belt will go on.
b. Using the Diagram: Install the new Serpentine Belt on the remainder of the Pulleys....over, under, left right.
c. Using a Serpentine Belt Tensioner Tool or Wrench or Ratchet Tool: Rotate/Move the Tensioner Pulley/Arm "away" from Belt contact area on the Tensioner. This spring is pretty hard and with a new belt, it will be even harder to install. Rotate/Move this to as-close to the maximum allowed inorder to have enough slack in the belt to get it up and over the last pulley.
d. Using your other hand - Pull the Belt up and over the Last remaining Pulley.
e. Before releasing the pressure on the Tensioner, visually inspect the remainder Pulleys and the Belts' Positioning on them.

Before You GO:
Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!

If it is a serpentine belt they all have a tension wheel. It looks like a pulley but is attached to a tension arm and will have a nut on the pulley center. Take a big ratchet or breaker bar and push/pull on the pulley arm to release the tension. Don't pinch your fingers. The same process to reposition the belt. Look at how the belt goes around the pulleys before removing to not get confused on putting the belt back.

Go to auto zone rent a special tool used to release tension on the serpentine belt tensioner.

It's located on the left side looking at the engine from teh front,

You may not have a lot of room to fully pull back the tensioner SO have some ratchets ready and some sockets and a small pipe for leverage, it's a bear.

Your tensioner MAY be bad so you may have to replace it.

how do i take off the old belt tenisoner of a 96 grand caravan 3.8 is the motor

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.

you need a 15mm wrench and skinny hands or a long belt router. place wrench on tensioner bolt and pull to rotate clockwise,at same time undo belt always holding tensioner, after removing belt from a couple pulleys release tensioner and finish removing belt from engine,for installacion reverse procedure.

What engine do you have? The 3.3 and 3.8 engines have a single serpentine belt, and a belt tensioner, so no adjustment is needed. Did you replace the tensioner, and want to know how much to torque it? countrycurt0