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Old 03-03-2004, 02:08   #1 (permalink)
Vic
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confused Aircon surging on EL

Have any EL owners here had problems with the aircon surging on-off-on-off whilst the engine is running?
If I turn on the auto function on my climate control, the aircon starts to cool but after a short while it sounds like the compressor is turning on and off. It does this even while accelerating up to the speed limit, just cutting in and out and causes the engine to surge.
I thought it might be lack of gas but the air out of the vents is cool.
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Old 03-03-2004, 22:34   #2 (permalink)
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Re: Aircon surging on EL

I think you will find it is what is called the TX valve. This is a little gizmo that doesn't let the system freeze up by letting the compressor not work for a while. It is easy to replace, but it does mean loosing all the gas out of you system and having to regas it. That in itself is not too expensive, abot $80 at TPA in Dandenong, whom I highly recommend by the way. (and I don't work there)
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Old 03-04-2004, 00:52   #3 (permalink)
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Re: Aircon surging on EL

TX valve?
You've had this fault before? Was it the same fault condition?
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Old 03-04-2004, 17:55   #4 (permalink)
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Re: Aircon surging on EL

The fault that I had was the TX valve had a bit of dirt in it, and it was not letting the valve work properly. The A/C would work, then switch off, then work, then switch off etc, all within a few moments. It would stay cool but not real cold. The TX valve is easy to replace, as I said, and surprisingly inexpensive. Without the labour component of course. Other considerations could be your dryer. These actually need to be replaced every few years, otherwise they clog up with crap, and don't work. These doohickies "dry" the aircon fluid, as the name suggests. Again, surprisingly inexpensive and easy to replace, but again the system will need regassing.

There is one fault with the original A/C pump on the EF/ELs. It tends to destroy itself. In order for this not to happen, one needs to run the A/C for at least 20 mins or so once a week. This keeps the bearings lubricated and the seals lubricated too. The A/C is a very effective demister, as it drys out the air in the cabin.
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Old 03-04-2004, 23:39   #5 (permalink)
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Re: Aircon surging on EL

Sweet. I am going to look into this and hopefully I will be able to use the aircon for the remaining hot weather in March instead of putting the windows down.
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Old 03-18-2004, 03:42   #6 (permalink)
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Re: Aircon surging on EL

I had this problem but not in a Falcon. Same thing though, A/C was cutting in and out rapidly to the stage where if the car was idling, the A/C wouldnt cool. Once you got moving again, it would then cut in and out and blow cold air. Problem was it was over gassed and tripping the high pressure cut out switch. Would really play up on those extremely hot days. Cure, next time it does it, release a little gas from the sysytem. It will be R134A gas and wont harm the ozone layer.
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Old 03-18-2004, 03:56   #7 (permalink)
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Re: Aircon surging on EL

Well I have had Mr Aircon Guru look at my aircon problem and he went and pressure tested it and said that it has a blockage causing it to overpressurize which then forces it to turn off. He said that its the TX valve and also suggested for the sake of $50 to replace the little bottle just behind the front bumper as well.
Hopefully I will be able to use the auto feature on the climate control for the first time since I bought the car.
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