Question about 1995 Ford F250

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My airconditioner compressor won't turn on. It's getting about 11 volts but won't turn. I've jumped from the battery to the compressor and it works. All fuses are good but I'm not sure about relays. I don't know which relay is for the A/C if any at all. Help

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  • Bill Scamahorn Nov 12, 2010

    Sorry - I forgot to mention that I had checked the freon and the system was full. I had also checked for continuity on the low pressure switch and confirmed that there was continuity between the two contacts. What can I check next?

  • Bill Scamahorn Nov 15, 2010

    Sorry for the delay. I didn't realize that you had responded. I was expecting another email notice. Anyway, I need to buy an owners manual since one did not come with my truck when I bought it used. I'll do that today. The relays are not identified on the fuse box. It refers me to the owners manual also. Will get back soon. Thanks Bill

  • Bill Scamahorn Nov 19, 2010

    Ronsrams - I haven't located an owners manual yet but did acquire a Haynes repair manual which helped somewhat to test relays with an ohmmeter but it didn't identify which relay was applicable to the A/C. Is it possible for you to email me a diagram of the fuse box which labels the fuses? Thanks again - Bill

  • Bill Scamahorn Nov 19, 2010

    That is a good idea. I will check with our local salvage yards too and let you know if I get one before Monday. Thanks - Bill

  • Bill Scamahorn Nov 24, 2010

    Ron - Thanks for checking. I checked also at a salvage yard and was informed that a '96 was basically the same wiring as the '95. But they didn't have anything even close to what I needed. I would appreciate anything you could email me. My address is:

    Thanks - Bill

  • Bill Scamahorn Dec 07, 2010

    Ron - I thought I had replied back to your last message two weeks ago but it must not have made it through cyber space. Anywasy, I still need a picture or a diagram showing the location of the relay/s for the A/C system. Would appreciate that greatly. Thanks - Bill


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Check to make sure you have enough freon in your system. If the pressure in your system is low the pressure switch in the pressure line will not allow it to turn on. It will turn on no matter what if you run a hot wire to it like you did but thats good cause then you know its not the compressor itself.

Posted on Nov 11, 2010

  • 1 more comment 
  • Ron A Martinson Nov 12, 2010

    The relays are often in a fuse box under the hood. Most of the time they are labled in the fuse box to what they are for. If not check in your owners manual

  • Ron A Martinson Nov 19, 2010

    I will see what i can dig up. I have some local salvage yards that I work with maybe I could find a manual and send you some pic. Might not be able to get a hold of a manual untill monday though.

  • Ron A Martinson Nov 23, 2010

    Well I went to the salvage yard and the closest thing I could find was one for a 96. I know they change the body style that year but it might be the same and then again it could be totally differnt. If you think this might help I can take pics of the relays in the fuse box and the labling from the book and send them to you if you have an e-mail adderss I can send them to. Let me know Ron


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