My AC Switchs wont turn on but the ac is fully charged and the fan works changed the thermostat and still the ac wont work..please help!!

Hello. Your car's cooling fan relays are somewhere in the fusebox/relay box. Also, your car has a 'fan switch' on the thermostat housing. If the 'fan switch' is in operable, the cooling fans won't work. It can be the thermostat housing seal/gasket. Good luck and keep me informed; if you want to.

Check out your thermostat - it is wired in series with low pressure switch and if is open clutch will not activate and the compressor will not run.

Ac fan not coming on ???? You mean the Blower motor that pushes air into the vehicle ? What make , model an year vehicle ?

There are two different thermostats--one in the cooling system, and one just to turn on fans. The AC has a separate circuit to turn on fans regardless of engine temp, so tind the the fan thermostat and test it.

If refrigerant is low , high side pressure may not be high enough to engage the pressure switch to kick on the fans. Have the a/c system evac'd and recharged to capacity then recheck fan operation. Also, extreme cold weather can reduce high side pressure on a fully charged system preventing fans from coming on.

check radiator fan. it may seem to work but they tend to blow but not as fast they should. one way is to remove it and connect it to a 12 volt source. it should try to lift off the ground or houver. if not that check thermostat and relay to fan. also always remember to replace thermostat they are cheap. and it never hurts to replace it. mian thing is to check fan and see if is blowing with as fast as it should. radiator shops can do this for you . you may want to remove the fan and take it yourself to save money

Your thermostat might be sticking which rarely happens. You should also check your fan and belts from the fan. Located behind the radiator. Hope this helps!!



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One way to tell if the fan works is by turning on the AC, when you do this the fan should turn on.
If the fan works when the AC is on you may have a bad temp sensor, relay, fuse or wiring problem.
If the fan doesn't work with the AC then you would replace the whole fan unit as an assembly.
If your car doesn't have AC then you should just take it to a shop.

check to make sure the a/c system is fully charged, if it is not the system will not turn on, if you need more help get back to me. please rate my fix as i strive to be the best

maybe this will help you