A/C not working properly

I am not sure I understand. You have cold air when the A/C is on except when you are accelerating then it blows hot? Then a second issue is when the A/C is off you have hot air blowing in?

Either way, we need to start with checking the pressure in the system. If it blows cold then it should be okay. However, we need to check it and not make that assumption.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

I am attaching a chart below that will help with proper pressures.

Next the most likely cause of this is a blend door issue. So, we need to access the door and when it is blowing hot when the A/C is on, we need to access the blend door actuator and see if it is moving. If this is happening, then I am pretty sure the actuator is the issue.

https://www.2carpros.com/articles/replace-blend-door-motor

Take a look at the attached for this actuator but let me know if I am understanding this correctly.

Thanks

Thanks Mr. Kenny for your time and sorry for being misunderstood what am trying to say my A/C works fine and flow cold air when i turn it on, but when i am not using the A/C and it's in the off position and start accelerating hot air comes out from the vent .
Thanks again.

Got it. No apologies needed. It's not easy to describe these things that happen.

It sounds like the air inlet door is stuck so that the air is allowed in at all times. So, when you have the AC on it passes the air over the evaporator and cools it down.

When you have it off, it is allowing the hot air to come in from the engine or outside. The acceleration forces it in, and you feel it through the ducts.

I am attaching the process below on how to replace this. If it were me, I would try replacing this based on this info.

That's nice of you Mr. Kenny, to but you in picture i post photos of the car and under passenger seat which I think you mean this what square plastic if it is the one can i get the part number the third picture is this loose black comes from A/C. i seen it today where exactly should be placed.
I really appreciate your help.

It is hard to orient myself but that white/tan square plastic piece appears to be the blend door actuator. The air inlet door is going to be vacuum controlled which will be a vacuum actuator like the one I am pointing too.

Try and move the fresh air control to recirculate and see if this actuator moves.

If it doesn't then try manually moving the actuator and see if the issue still happens.

Thanks a lot for your help at least I knew where to star.t
I found this under the hood i wonder where it should be placed.

That looks like the breather hose that connects to the intake tube.

The hose should be in about the location that it plugs into.

So, feel around the hose that I am pointing too and see if you can find a hole.

Thanks a lot, i really appreciated your help.

You are welcome. Thanks for using 2CarPros and let us know if you have other issues. We will need to get a new post started for them, but we are here to help if you need anything.

Thanks again.