The AC is not working in my car, have tried to recharge di not work and the light does go on when turned on but I do hear a little bit of a humm.

it will not eliminate the noise. you'll need to replace the bearings.besides from the knocking noise is the air coming out from the vents cold? when you recharge the freon is it totally empty? if thats the case you probably have a leak in the system . check all the lines and connections for leaks using liquid soap add a little bit of water to make it bubbly.start the ac and use a sponge.normally when there is a leak the oil will leak together with the gas so ypu'll need to add some refrigerant oil as well pag oil is best..but i'll need more details so i can help you out

try the ac fixes(freon recharge) found at your local autoparts store if that works for a little while you have a leak in the ac system if it makes no change it is most likely the ac compressor or the ac pulley is not engaging

Maybe a fuse or relay.

http://www.autogenius.info/honda-accord-2004-fuse-box-diagram/

This still sounds like low pressure. If you re-charged a system that was low, and didn't pull a vacuum and evacuate the system first, then you still have air in the system, which is causing the compressor to cycle on and off.

try starting with starting fluid if starts check fuel pump just incase

these steps are done by the flowoling remove airfilter spay starting fluid in start jeep
keep in mind if this dose not work 1st time it may take up to 6 times
if it starts than shuts off hve someone help u by turning the key to the on position see if u get a humm by the gas cap you may want to open gas cap to assit in hearing the pump

hi ,look under your dash near the blower and find a 4 or 5 wire plug going in near the blower,unplug it and remove the screws holding it in place ,pull it out ,it will be about half a cigarette packet in size when youve got it out in your hand ,this is most likely your problem part ,its a heater resistor ,it controls your fan speeds,it should be a white chalky resistor or an alloy heat sink type ,they come in 2 ways as i've stated,phone a ford specialist junkyard or auto wrecker or a new ford dealer and give them the part number it has on it and your thunderbird specs or ID numbers and you should be able to locate a replacement without too much bother .
THANK YOU for using FixYa

I'm afraid you have the deluxe system,my friend. It has 2 electronic circuit boards that may be going bad. Very expensive unless you can find used or aftermarket.
I hope it's just the blower motor, but I had the other thing happen and I had to wire around it,losing my AUTO temp and blower control. don-ohio

you will have to test fuel pump open gas cap listen carefuly have someone turn the ignition switch to run not start when key is on you will hear a humming noise only works for 1-2 sec try three times if you dont hear a humm then fuel pump isnt working

test this first hope it helps

plz vote comment if you need more help reply

can you hear the compressor kicking on when you turn it on? If yes, the system may just need a recharge. Also they can iject dye into the system at the same time of charging to see if it has a leak.

check the relay maybe faulty and overheating