high presure switch on a/c has no power to it where does it get powerl 1999 ford contour se
Country: United StatesMake: FordModel: ContourYear: 1999
a/c didnt work,put gages on it & has frion?
Hi, Thank you for asking your question on JustAnswer. The other Experts and I are working on your answer. By the way, it would help us to know:-What switch are you referring to?-What else have you already tried?Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
hi-pressure switch on the a/c the low pressure switch is ok, frion level is ok
Where is the switch you are referring to located?
on the dicharge line next to the point where you attach hi pressure gage. there is a black and white wire on it , located front left side of the vehicle
Thank you for the reply. Just wanted to make sure you were not talking about the A/C cycling switch.
Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
can you help , thanks
my question wasnt anwered
Hi, Thank you for asking your question on JustAnswer.The function of the high pressure switch is to protect the high pressure section of the refrigerant circuit. When pressure exceeds the maximum value of 29,6 bar (2965 kPa, 430 psi) because, for instance, the air flow through the condenser is impeded or the high pressure line is blocked, the high pressure switch switches the compressor off.
Only when the pressure has fallen once more to 22,4 bar (2241 kPa, 325 psi) bar is the compressor switched on again. At a pressure level of 22,4 bar (2241 kPa, 325 psi) the PCM switches to high blower speed.
Only when the pressure has fallen once more to 17,2 bar (1717 kPa, 249 psi) does the PCM switch to low blower speed.
ok doesnt that switch need to have power to it? , the a/c has not worked for about a month is that switch n/o or n/c
-Does the compressor clutch engage?-What problems are you having?
no ompressor will not engage
-How much freon has been added?
Hi,Thank you for asking your question on JustAnswer. The most likely cause of the problem you are having is a defective A/C cycling switch, before replacing any parts I do recommend proper testing first, If you need I can send test procedures as well as replacement instructions.Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
that would be very helpfull
Thank you for the reply.
Please give me a few moments to upload that information for you (There is quite a bit). And Please don't forget to click on the green ACCEPT answer button, so that I may get credit for my work, thanks.
16 years experience Ford,Nissan and Honda dealership in all areas
hope this works much thanks
Hi, Thank you for asking your question on JustAnswer. The test procedures are below.
Disconnect A/C Cycling Switch C692
Attachments are only available to registered users.
Disconnect Dual Pressure Switch C882
Connect Dual Pressure Switch C882
Connect A/C cycling switch C692
Disconnect A/C WOT Relay C465
Disconnect A/C Clutch Solenoid
Disconnect A/C Compressor Clutch Diode
Disconnect Air Distribution Control Switch C788
Disconnect Heater Relay C81