My car is blowing extreamly hot air for some reason. I put freon in the car a few days ago and it was blowing cold but now all of a sudden it hot. Also i didnt hear the compressor engage when i turned the ac on. Please tell me i dont need a new compressor. Help please!!!!

 

It doesn't have to be the compressor, it could be any component but you need to first see if you still have any freon in the system and your fuses are ok.

That you added freon to begin with says you have a leak. Find that, and you will have an idea what you need to do.

 

The same thing happen to mine do you know where the fuses or relays for the ac are at??

 

Place an AC gauge on the low pressure port. With car running and set at max fan speed and coldest temp, see if you have any pressure.

5 bucks says you have a leak since your compressor is not kicking on. Be sure to check the easy stuff like fuses first though.

 

I checked the 10a fuse under the hood and it was good but didnt check any relays.

 

I placed the ac gauge about a week ago on the low port and it read need charge so i added freon. it blowed cold for a couple of days but went back to hot so im sure it leaked out. I checked it again and it reads need chsrgebagain also. I pray i dont need a new compressor. Thanks!

 

It seems you have a leak somewhere. It could be something simple as a lose fitting or something.. Maybe work was done on your car in the past and the hose was pushed closer something that allowed it to vibrate a hole into the line..

Good luck and keep us posted.

 

You could be right. I had a back yard mechanic put a alternator in and maybe he loosened something and didnt tighten it back. Thanks

 

Then you are probably in luck and it is only a few bucks worth of o-rings (I am betting he didn't replace those when he disconnected the AC to replace the alternator) and some refrig/oil. Be sure to pull vacuum afterwards (if he had it opened up you really should replace the drier and expansion valve.) it isn't "too difficult" if you have the tools and patience, although it did take me decades to finally get a good set of gauges, recovery can, pump/vacuum and disconnect tools..

If you don't have the tools, most folks will charge a few hundred for the job (if that is all the issue was.)

Good luck and let us know the results.

 

very common to have the joint leak if pushed around when working on something, The low side by the orifice tube (no kidding on the name) The compressor will not kick on if there is no Freon if it is low on Freon it will short cycle meaning on and off really quick and you do not want that too long that is how the clutch goes bad in the compressor. LT is right it most likely is and o ring at the low side no shop will do it with out evacuating the system then recharging it if you got the tools or know someone you can get it done very cheap, Silly question before all that when it was worked on could it have been unplugged?

 

In my old maxima when i had ac trouble i used r134a with the manifold gauge set after installing a new ac compressor and filled it to what i thought was the right pressure and ac was blowing hot with radiator fans and compressor kicking on and off for a brief second and remaining off for many more seconds before it cycles again. If this is whats happening you may have overfilled the system and the compressor is kicking off as a failsafe, many gauges may not read red or even overfilled slightly to be too much for our specific system depending on ambient outside temperature as well. You may need to bleed some out from the system if its a cycling compressor issue as you may have overfilled it on a cooler day and now it doesnt work on a warmer day because the freon expanded past the pressure switch on the compressor. Double check your low end pressures and whether its cycling or not.

 

It was worked on about 2 weeks ago but didnt test the ac after the alternator was done because it was cool in FL. Im going to have it checked out sometime this week and hopefully it is the o ring as u said. I will let you guys know the result so hopefully if anyone else experience this it will be a help to them. Thanks bro!

 

Definitely will let u know.. Thanks so much for the info i have a good feeling thats what is also.