AC Problem | Ford Escort Owners Association (FEOA)
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AC Problem

Discussion in 'ZX2 1998-2004 2.0L DOHC' started by homestead367, Apr 5, 2010.

  1. homestead367

    homestead367 New Member

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    My air conditioner does not work. I have check the freon level is correct. When i go to turn the A/C nothing happens. Cooling fan does not kick on, nor does the compressor. I am thinking my ccrm might have a problem in it since that is a normal problem with this car. Here is my question. My car runs in a closed loop unless I floor it, then it runs in an open loop. Which is normal. If this is working normal is my wot sensor working then? So the ccrm is not broken. Or is it still possibly the same problem.
  2. LOWETGT

    LOWETGT FEOA Member

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    Your car should go into closed loop when up to operating temp and remain. Do you run a scanner on it to know when it is in each loop? As far as the A/C, I would check the pressure switch, the fuse and relay. Sounds like electrical issue if the refrigerant is truly full to proper capacity. Check fuse, swap relay, and jumper the pressure switch in stages to see if anything gives power to the compressor clutch when commanded.
  3. homestead367

    homestead367 New Member

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    Yes I have a scanner hooked up to it all the time. I never thought to check the fuse. Wow if its that simple, this might be a palm face moment.
  4. homestead367

    homestead367 New Member

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    How hard is it to swap out the switches? Ik how to swap the ccrm. Im sure the pressure switches are easier and cheaper.
  5. FordMan59

    FordMan59 FEOA Member

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    The pressure switches just screw in, just unscrew them and there's a schrader valve to prevent all the freon from coming out of the system. If the ZX-2 is like the regular Escort one of the pressure switches is in the freon line on the left front side of the engine compartment and the other one is located on the drier on the right side of the engine compartment near the firewall.
  6. LOWETGT

    LOWETGT FEOA Member

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    I usually just jumper the switch wiring and leave it alone. Putting a jumper across will close circuit. If things operate normally with the jumper, then you have a bad pressure switch or low on charge.
  7. homestead367

    homestead367 New Member

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    That is what I was planning on trying. Which of the four wires to i connect together to cause it to bypass the switch.
  8. homestead367

    homestead367 New Member

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    I talked to a guy who works on AC's a lot. He told me the sensor I was looking to bypass to is the low pressure not the high pressure. I just want to make sure I am looking in the right spot. The low pressure is on the P/S of the car. In the front by the radiator, before the compressor. I believe it is on top of the accumulator? Is it right by the power steering resevor?
  9. LOWETGT

    LOWETGT FEOA Member

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    I took the A/C out of my GT years ago. I am unsure of sensor location, but the high pressure side will be the smaller diameter tubing. I say follow it until you find the sensor.
  10. homestead367

    homestead367 New Member

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    Ok. I checked the pressure in my low side of my ac. It was low. I filled it up or tried to. I got the pressure up to about 40psi, and the compressor started to cycle. Then I opened another bottle and the pressure went up to about 70psi. The compressor continued to run. I drove it around to make sure everything was working correctly. After 15 minutes or so I shut the car down and heard a hissing sound. Apparently the compressors safety valve opened up and released all the freon in my system. I took it to a repair shop and had them check it for leaks. They said the entire system held vacuum and told me my compressor was bad. Since I just had it running the other day, is it possible i just over filled the freon causing it to get excess pressure or are they right. Im not sure how much these guys know about air conditioners. Any thoughts? Is it worth spending 60 dollars on freon and trying again?

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