Quote:
Originally Posted by fordmaster
The clutch does not sense air blowing through it. It only senses the condition of pressure between high and low side of compressor by way of some sort of expansion valve. Older Fords had an expansion valve filled with gas that fed back to the compressor. I'm sure now it is an electronically operated switch. If it is really hot and the temp of high pressure gas coming back to the compressor is super high it will continue to run to put as much low pressure liquid out until the high side comes down or equalizes then it will cycle on and off as needed.
It sounds like things are working properly. I don't understand what you think your problem is. If it cycles on and off rapidly it is either a low charge of refrigerant or in some case an over charge.
|
well its not "rapid" but I used to be able to go start my truck, turn on the A/C and come back 5 mins later with the windows freezing over and now if you just start the truck, she wont blow cold unless you are moving or the truck is warmed up (and also the fans come on). I attached a pressure gauge to the low-pressure port and it was in the green, i added a 1/2 can and it went into the yellow..so it cant be a charge.
this isnt a BIG problem, but the signs that it wont blow cold during the initial start up has me worried plus