Compressor is kickin on and off,what could b problem?

i'd change the pump relay as must have failed if the pump works with direct power supply , then you'll see if it's causing the a/c issue as well

sounds more like a temp door is stuck feel the larger pipe for the ac while it is running if its cold you have a door problem

Autozone.com has free digrams in the repair section.
What won't "kickin"? The starter does not turn? If that is the case,
Go to the starter, there will be a large battery cable and a smaller wire on a seperate terminal. Put a test light to the small terminal/wire and have a helper turn the key as if to start the car. If the test light comes on then the starter/solenoid is bad. No light, may be ignition, nuetral safety switch, fuses, etc..

yes

freon leak, check to see if compressor is kickin on, look under hood for a/c compressor. the front will move with the pulley if its working, ... if not working its low on freon or low pressure switch is bad,

did you burp the system after you where done. The heater d-core is the highest place in the cooling system and will be the first to collect an air pocket. Running the vehicle at idle with the cap off will help purge the air out.

The a/c will turn on any time the mode switch is on defrost. When the heat selector is turned to hot the air will first go through the a/c evaporator core and then through the heater core. When the heat selector is turned to cold air will only go through the evap core. So regardless if the a/c compressor is on or not with the heat selector on hot it should blow hot air.

Did the heat work before you replaced the other parts?

If not than it is possible that the heater core is plugged. Especially if the coolant was really dirty before you started.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

The clutch is on the end of the a/c compressor.
When you are filling with refrigerant you need to make sure the ac is turned on and the fan is on high. Make sure the can of refrigerant is connected to the low side.

I think you may a restriction in you a/c lines causing ice to build up and your freon won't circulate, and bad pressure switch could also cause this. Some other you might want to look at is your drive belt tension, cooler compressor assembly, condenser fan, A/C amplifier assembly, and your heater control accessory assembly, and your volume of refrigerant. Hopefully this helps.

Check your tranny fluid.

First thing to ask your self is, When you ingauge the clutch does cold air come out the vents? If so Charge is likely sufficent, If air is cool but not cold likely charge is low & is the cause of compresser not kickin on the clutch. place a proper charge in the system but make sure you know how much to add in, what type of refridgerant it takes ( 134-a ), (R-12). Besure that you use no sealers & that no sealers or Propane was used potentel system damage & injury or Death could result as improper proceeding at this point.
If you do have cold air check the lowside pressure switch function. You do this by first locating the switch disconecting the pigtail & useing a proper jumper wire across the 2 pigtail (female) ends of the harness connector not the switch its self.
If compresser clutch ingauges & Cold air blows from the vents replace low side pressure switch if this does not work grab your wallet,the yellow pages & the phone. I strongly recommend takeing your vehical to a qualified repair facility or Tech.
I Truely hope that I have helped your problem & Knowlege I have given you was useful!

Sincerly
Chris Rader
Mechanic @ Large Mobile Automotive Service Tucson,AZ
www.mechanic-at-large.com