AC worked fine.
I changed my water pump, did nothing else at all.
And as far as I know the AC and water pump are unrelated. So I'm basically confused as to why my AC would go out immediately after the new water pump is on..

It's not for some reason related on this car is it? If not I guess I would just need it charged.
Oh and the blower motor is just fine. Blows nice and hot air on me.
Perfect timing too, with the weather getting hot.

Any other info needed just let me know. Thanks

 

Please... It's pretty hot here. Can anyone explain how to recharge it?

 

Jarrod, often when you are making a repair under the hood you can inadvertently do things that effect other systems. Start with the basics, check the fuses for the ac system first, replace any that are bad. You can check with a test light or ohm meter. If fuses are good, check to see if the compressor engages when you turn it on. If not, check the connection at the compressor. Unlikely that it just needs a charge if it worked before you did the water pump. It is getting warm!

 

Jarrod: The constant hot air that blows from your passenger compartment vents could be a problem with the A/C, or it could be a stuck temperature blend door in the air handler box, which is under the dash and behind the radio.

This thread has instructions to help you isolate the root cause of the hot air:
https://www.jaguarforums.com/forum/x...5/#post1211327


Let us know what you find, and the very knowledgeable members of this forum will advise you how to fix either the A/C or the air handler box, depending on the cause of the hot air problem.


Good luck.

 

106 F today in Phoenix.

I like the troublshooting advice on this thread. You can also check the AC system to see if it is full of refrigerant, then add if you're low. Worked for me last summer.

Arctic Freeze DIY recharge kit
https://www.google.com/search?q=ac+r...63085794836254

 

Well the compressor turns on. I know that much.
I'll check on the other things as it cools off a bit later.
Thanks guys

 

The air it blows is the same for high to low. Which is basically a blow dryer here.
So most likely a blend door I assume. Though it does blow through the correct vents. Not sure if that matters or not.

 

If the compressor comes on you have it narrowed to low refrifgerent or the blend door issue dwclapp mentions above. Need to put a set of gauges on it to read pressures otherwise you are just guessing. Good luck....

 

Jarrod: If I understand correctly, when the engine is hot, only hot air blows from the vents, even with the A/C on and the temperature control set to LOW.

But what happens when the engine is cold, e.g., before you start driving in the morning? Can you get cold air, not ambient air, but cold air to blow from the vents when the engine is cold? If 'yes', then this points to a stuck temperature blend door which always directs air thru the heater core in the air handler box, under the dash.

When you describe how air blows from the correct vents, I assume you can use the control panel to aim air at either the windshield, your face or your feet. If 'yes', the other air doors are working properly inside the air handler box, and only the temperature blend door seems to be stuck in the 'hot' position.

Here are two threads in which other members diagnose and fix a stuck temperature blend door. In their case, the blend door is stuck in the 'cold' position, i.e., always bypassing the heater core. But the diagnosis and fix should be helpful to your situation:

Cold air from heater

Defroster Blows Cold


Apart from a stuck temperature blend door, InjPerf gives good advice to also check the Freon using pressure gauges. If the Freon level is somewhat low, the A/C will work well on a cool morning or evening, but struggle to keep up with the heat of the midday sun, or when you get stuck in traffic where less air flows thru the condenser and the A/C has to work harder.


Let us know what you find, and we'll help you from there.

 

So, after trouble shooting everything, I figured I'd just try and recharge the system. Which halfway worked. It blows cold air on the passenger side, but warm air on the drivers side. Anyone know why?

 

jarrod: How strange. If you redirect the air to blow at the windshield, at your face, and at your feet, can you get any cold air to blow from the driver's side vents? Or does it consistently blow warm air from the driver's side and cold air from the passenger side?

 

It was consistent no matter what.
So I did a bit of research and found with some vehicles, if you have just a bit too little freon it'll do this.
So I kept on adding some little by little until it blew cool air from both sides. I feel like it's a bit over filled, but it may also be the way the gauge reads since it's 5000 degrees here.

 

Maybe your sound system is overheating the car?

 

jarrod: From what you describe, cold Freon must flow thru the evaporator under the dash, first thru loops on the US passenger side, and last thru loops on the US drivers side, like this:

 

It doesnt over heat at all.

dwclapp, I think that must have been it. It's the only thing that really makes sense.

 

Jeez it was meant to be a joke! Have you been out in the sun?

 

Haha, well with the things some people say, you never know when they're serious.
And yes, I have been in the sun.

 

I'll be putting a new AC compressor in this week. On my way to Tucson Saturday the temperature was a sweet 110 Fahrenheit. My AC died on the hwy and is totally dead now.

It's the clutch mechanism on the compressor that locked up or broke loose. When I engage it, nothing happens. I imagine these are original parts, I'll be sure to check as I've had this car 5 years of its 13.

The pulley for the compressor turns so the serpentine belt is humming along. The motor makes a stupid chingering noise now which makes me look like a derelict Jag owner when I start it up in public.

I'll have to find a good AC shop to replace the AC compressor and recharge the system, check for leaks, and put a bow on it.

 

Let me know where you take it. Hardly anywhere I've found around here will even work on a jag

 

I have this issue to a certain extent, even after putting a little more gas in. I didn't want to overfill it.

I would like to believe dwclapp's explanation, but I am still feeling that some mix door somewhere is still not working right.

On the other hand, maybe I should just add more freon...