ok first off, i checked my system there is no leaks and there is fresh freon and it has the right amount. Now for the issue, if i start the car n let it idle the ac blows nice n cold but when i start to drive it gets hot, any help with this?

 

Is the heater hose valve on the firewall stuck open?

 

no its close,
also i just started my car n let it idle for about 5 mins n wen i came back the air was just blowing hot, so i turn off the car n start it back n the ac started to blow cold again until i start to drive

 

When the A/C blows hot but is ON:

1) Does the condenser fan stop running?
2) Does the compressor clutch disengage?
3) Both (1) and (2)?
4) What car do you have?

 

condensor fan stays on but compressor clutch disengage's, its a 99 dx

 

Probably have a relay issue or something electrical. Check your fuses and relays. Swap your horn with the ac relay if they are identical and see what it does.

 

Most likely, the clearance between the pulley and armature plate is too wide:

 

If the clearance is out of spec, these should help:

 

Are your lines freezing? My ford fusion did the same thing. My blower motor was going out...

 

The A/C thermostat would prevent this^ in a Civic and the condenser fan would not run.

 

Thanks for clarifying ^^