Problems with XJ40 AC

JohnHeik

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Hello! My 1990 XJ6 2.9 Air con was just filled up and leaking pressure switch was replaced with new part.

The AC works normally for a while, but after about 30 min drive, the AC stops giving cold air and at the same time the windows starts get very foggy. Also sometimes the air con control panel starts blink lights and the blowers stop. I can then turn off and on the blowers but it still gives me that very moist air from the ac.

Im assuming that there is water in the AC system, because when the problem occurs, I cant see water dripping under the car. Could You advise where are the drain tube (or tubes) in the car?
 

SV8Predator

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Further up the creek.
The water dripping under the car is the moisture that the AC system has removed from the cabin air. It does not mean that there's "water in the AC system".

You say you've just had work done to the AC system? Take the car back to the AC specialist then. The AC is turning off for a reason. Maybe a faulty pressure switch. But no one on an internet forum can diagnose this for you. However, the AC specialist will be able to.
 

JohnHeik

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The water dripping under the car is the moisture that the AC system has removed from the cabin air. It does not mean that there's "water in the AC system".

You say you've just had work done to the AC system? Take the car back to the AC specialist then. The AC is turning off for a reason. Maybe a faulty pressure switch. But no one on an internet forum can diagnose this for you. However, the AC specialist will be able to.
Hello, thanks for reply!

Yes I know that it is normal that it is dropping water, but it is not normal that it stops dropping it, so my guess is that there is something wrong.

So I bought the car just one month ago. The previous owner said that he had tried to get the AC system filled, but then the pressure switch had been leaking so they changed it to a new part. So when I bought the car he said that it just needs a refill of the AC. So that is what they did at the AC specialist.

So im first just trying to check if the problem could be in the drain system. Because when the problem (of windows heavily fogging) occurs, the outside air have not meen moist at all, so the moisture have to come from the system itself.
 
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