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1993 Ford Explorer

Question: AC not blowing cold

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rev, Athens, AL, July 26, 2009, 20:48
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Ac went from blowing cold to just blowing. Isnt hot untill car gets hot or is hot outside but doesnt get cold. Think maybe just a quick recharge? If so how do I know what was used for it R12 or 134a??

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  • Answer #1

    Russ July 31, 2009, 14:46
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    R12 systems have the old style service valves. The 134a systems have a new style, larger service valve. There is no way you can mix up the two. Unless your 1993 Explorer has be retrofit for 134a then I would suspect your system is R12. There should also be a service label under the hood which will tell what type of system and what the charge amount should be. Does the compressor run when you have the A/C on? If so check the outlet line (the larger line) at the firewall, it should be cold. If it is then chances are the charge is OK. If it is warm then the charge maybe low. If the compressor is not running then the system could be empty.

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