How to take off pulley tenison on an 2000 Doge Neon an 4 cylinder

It may depend on engine litre size. 4 cylinder shows top pulley for ac belt, needs to be loosened. to release tension.

6 cylinder shows tensioner pulley on mounting bracket for compressor. Loosen the bolt for tensioner pulley to release tension.

I'm not sure that is a valid trouble code for your car. The code for Dodge is for a wastegate solenoid which is normally used on turbo engines.
The miss could be ignition, fuel, or something mechanical.

You need the tensioner and sorry but only comes as one part.

it should be a sealed bearing get new pully

remove the tire and plastic rock guard and go through the wheel well to get access to the tensioner pulley

Technically, nothing else needs to be changed when replacing a timing belt, however it is recommended or suggested to replace the timing belt tensioner and water pump while doing the belt. These items are only accessable when doing a timing belt. The cost should be under $100.00

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

first releave the tension as you normally would by using a breaker bar and socket and move the serpentine belt aside. Then you remove the center bolt on the pulley itself. Install new pulley and replace the serpentine.

They are under the hood or on the front crossmember.

Regards,
matt

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