Hey Guys....I have been reading & searching to the point where my brain is mush. I need help diagnosing what is going on with my xB's A/C.

Here is what I have found out so far:

1. Coolant pressure & levels are good.
2. Compressor engages as it should.
3. Fan blows properly at all 4 settings out of all the vents
4. A/C was blowing cool on the outside 2 vents, but is now blowing hot everywhere.
5. Anytime the A/C is on....it blows hot.
6. Running air from outside will be cool.
7. The fuze is not blown.

What am I missing?
What else can cause the A/C to blow warm/hot?

Any help you guys can offer would be GREATLY appreciated!

 

"1. Coolant pressure & levels are good."

Coolant..... or Refrigerant? It sure sounds like you may need to recharge your AC.

 

There was issue with the A/C on the early xB's when they came out ask your dealer if your car was affected.
Or if they have any ideas. I see yours is a 06 but never hurts to ask.

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I would have it recharged..if your worried about your ac system leaking they can add a dye to your refrigerant to help them locate leaks..

my 05 blew hot...we recharged it and had the dye put in..they had the car for a day and found no leaks

total cost was under 150.00 at the stealership

 

What he says plus give the condenser a good once over looking for rock damage. Other have reported issues with leaky condensers. Also, remember if you need a new condenser you will also need a new reciever/dryer cause it will be contaminated from being exposed to outside air and moisture.

 

And don't try to recharge it yourself!

 

It was recharged and still not blowing right. Not sure what else to do....going to the dealership.

 

Hopefully the dealer can find your freon leak. I highly supect the condenser tho.

 

if your condensor is leaking you should see some oil where ever the leak is coming from. The AC system has its own oil which would leak out and leave a nice visible spot on the condensor if the condensor had a leak. so check for that if your still having a problem.

 

I have seen no visible leaks & nothing on the ground where I park the car. I haven't been able to get to the dealer yet due to my work schedule being so crazy. I hope i can get it fixed soon....it's been in the upper 90s for a couple weekes now.....it's miserable to drive.

 

The leaked oil will not make it to the ground. It only covers the surrounding area and should not be dripping. It will give you a good idea where the leak is tho.

 

A couple of items of note:

Put a thermometer into the center air 'register'. (A/C thermometers can be found at a decent auto parts store.)
Put a fan in front of the radiator and turn it on (high). This will simulate driving at highway speeds. Air really needs to be blowing across the condenser coil(s) to strip the heat away from them.
Also set the a/c to 'recirculate' the inside air. When an a/c unit is sucking in outside air (especially when temps are 95° +) it takes longer to cool the inside of a vehicle.

You said that coolant pressure and levels are good. That won't have any effect on the a/c. A/C is a product of stripping heat from the refrigerant (condenser, in front of radiator)
and passing it through an evaporator (inside vehicle) and stripping the cold from it, into the passenger compartment via the blower/fan.
A/C is a completely different cooling system than the engine's cooling system.

With that said, take a look at the 'receiver/drier' area, near the firewall.
(You might see a 'service' port where a technician will connect a 'manifold' to check pressures and charge the system. It will have a cap on it.)
Is there condensation forming on the refrigerant lines, or are they frozen over??
Are the lines cold to the touch, or are they warm??
If they are cold, or 'sweating', there is most likely 'some' refrigerant charge, but, if these lines are hot or even frozen over (you might see a hunk of ice!), then the system is low.
An A/C technician is your best bet for determining if the system is low.
An overcharged system will malfunction as easily as an undercharged system.

It's been a long time since I've messed with A/C units, but, at 90°+ temps, the refrigerant pressures will be 45-50+ lbs.
Again, if you don't know about A/C systems, take it to someone that does.

(If you get refrigerant/oil in your eyes. . . it's gonna hurt like a. . . ahem. . . female dog!)

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Further explanation please? Especially #6.
How hot is hot? Ambient temp or like the heat is on? Have you turned the heat up and noticed a further difference in temp?

I'm thinking possible blend door issue.

 

Did you ever figure out the problem?
I'm having the same problem..
i just realize that 2006 xB doesn't have A/C amplifier.
any suggestion will be greatly appreciated..

Thanks

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