Question about 1993 Ford Ranger SuperCab

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1993 ranger super 4x4 ac inop

I am getting no voltage to ac compressor when in on position, the internal light comes on, fuses are good, relay tests good, and the compressor will engage when i jump 12 volts directly to the terminals on compressor, but doesn't sound normal when doing so. The truck sat for a few years and hasn't had electrical going to ac since. could there be a pressure switch or something that would indicate the system is no longer properly charged, thus not allowing the current to flow to unit? It did work great prior to storing the truck.

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  • Anonymous Jul 17, 2008

    I guess I answered my question in my question, I jumped across the pressure switch on evaporator and ac started. I obviously leaked out refridgerant during storage, now to fix the leak, flush and recharge, keeping my fingers crossed in hopes this will solve my ac problems. I was a bit surprised though that there was no input from any readers here, thanks anyway ; Russeller

  • Anonymous Jul 17, 2008

    problem solved / see coment



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  • Ford Master
  • 1,061 Answers

Have you charged the ac. If so check the low limit sw. on the dryer it will cut the power to the compressor if the charge is low or if the sw. fails.

Posted on May 09, 2017


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Posted on Jan 02, 2017



  • 163 Answers

SOURCE: 2003 F150 4x4 will not engage

are the wheel hubs automatic or manual lock?

Posted on Nov 30, 2008

gerry bissi

  • 4388 Answers

SOURCE: A/C compressor clutch won't engage, system won't cool

Your system might be low on freon. Get a kit with a hose that has a gauge on it so you can see if you are in the "Good" range. The cycling switch won't close unless there is enough freon in the system. You can temorarily jumper the connector for the cycling switch to see if the compressor will come on. If it does, you are low on freon for sure. Do not let the compressor run for more than 15 - 30 seconds with it jumpered.
report back results.

Posted on May 21, 2009


  • 195 Answers

SOURCE: low voltage at fuel pump on 2005 new fuel pump no

There is a fuel pump relay used on your truck. Check the wiring diagragm for the location. Then also trace the wiring back to make sure you do not have nicks, cuts, or abrasions on the wire leaking voltage.
RPM Northwest

Posted on Jun 08, 2009


  • 1 Answer

SOURCE: have a 2000 Ford Ranger SuperCab, 4.0 4x4

I had a problem with my 2000 ranger when I bought it. Air was coming out of defroster vents. Check for a vacuum hose that may be off under the hood. It uses vacuum to open the vents.

Posted on Aug 29, 2009


  • 9 Answers

SOURCE: My ac is not working on my 2000 mustang 3.8L. I'm

You were close! Most Fords have a CCRM (Continuous Control Relay Module) thats on the passenger side fenderwell. It has 4 relays: one for the AC compressor cluth, one for the fuel pump, and two for the electric fan (high- and low-speed.) The AC is the one that fails the most. You can replace the CCRM by removing the intake air filter box and working through the fenderwell openings. If it gets to difficult you must remove the wheel and splash cover to replace it from the wheel opening.

Posted on Sep 21, 2009

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  • 2 Check the main circuit relay using a test light. If voltage is coming out of the relay, there is an open or short at the wire feeding power to the other switches. If no voltage is coming out of the relay, use the test light to make sure voltage is reaching the relay. If voltage is reaching the relay, replace it. If there is no voltage reaching the relay, there is an open or short at the wire between the relay and the main fuse.
  • 3 Check the circuit fuse or breaker at the inoperative window. If the fuse or breaker is okay, go to the next step. If you can hear a humming sound as you press the switch but the window does not operate, either the motor is bad or its gearbox may have broken teeth. Go to Step 7.
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