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My ac doesn't work I've replaced the compressor and tried to

Customer Question
Hi my ac doesn't work...
Hi my ac doesn't work I've replaced the compressor and tryed to put oil and freon and th clutch didn't engaged so I checked the fuses and their good so I unplugged the compressor and checked if it was getting power and its not passing any kind of voltage can you give me any pointers?
JA: Have you located the fuse box? Have you checked the circuit?
Customer: The fuse box inside yes and the circuit I'm not sure witch one is that one
JA: What is the model/year of your Ford?
Customer: 2008 f150 5.4 4x4 xl
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes, I've tried bypassing it, checked all my fusses, bought a new compressor
JA: Anything else you think the mechanic should know?
Customer: Checked to see if their was any voltage going to the compressor but nothing
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Ford Mechanic about your situation and then connect you two.
Submitted: 1 year ago.Category: Ford
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Answered in 9 minutes by:
7/9/2016
Ford Mechanic: Eric, Automotive Repair Shop Manager replied 1 year ago
Eric
Eric, Automotive Repair Shop Manager
Category: Ford
Satisfied Customers: 32,766
Experience: Automotive Repair Shop Manager, Technician
Verified

HI,

Ok, there is an ac pressure transducer that sends a signal to the computer to cut the power to the compressor if the pressure is too low or too high. With the system empty, this is why there is no power to the compressor. It is a safety measure.

At shops this is not an issue as we charge it on the high side with a machine and dont need to the compressor running.

On older cars you could simply jumper the pressure switch to kick the compressor on. This is no longer the case as this will fry your vehicle's computer. So you will need to apply 12v to the compressor at the compressor connector in order to kick the compressor on so that the suction side of the compressor will suck in the refrigerant from the low pressure service port you have the can of refrigerant connected to

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Customer reply replied 1 year ago
is their any way I can get it going my self?
Ford Mechanic: Eric, Automotive Repair Shop Manager replied 1 year ago

HI,

Not sure if you missed that part, but yes, you will need to apply 12v and ground directly to the compressor. Use jumper wires from the battery to the compressor harness connector to jumper the compressor for it to run while you fill the system

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Ford Mechanic: Eric, Automotive Repair Shop Manager replied 1 year ago

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Please remember to rate service using the rating page so that I may receive credit. Thanks

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Ford Mechanic: Eric, Automotive Repair Shop Manager replied 1 year ago

I noticed we have not yet resolved your concern you asked about. I would sure appreciate it if you would reply so I can offer my skills and knowledge and repair guide access to help as best I can.

~Do you still need more help?
~Confused by my info request or answer?
~Need more time?
~Confused on how the site works?
~Need more detail or a different explanation?

If the answer is YES to any of these just press reply and lets work on this concern some more.

If you have new questions now or in the future please do not hesitate to ask them. If you would like me to assist you. Just bookmark this page so you can access my profile easy and post a new question from the question box on my profile page.

Please remember to rate service using the rating page so that I may receive credit. Thanks

Please note that if you have a subscription service, you still are required to rate service, however you are not charged again. This is just so that your expert is credited for their time and services. Thank you.

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Eric
Eric
Eric, Automotive Repair Shop Manager
Category: Ford
Satisfied Customers: 32,766
32,766 Satisfied Customers
Experience: Automotive Repair Shop Manager, Technician

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