AC now takes a while to get cold in my XC90

Bigricksstg · Post by **Bigricksstg** » 24 Mar 2012, 08:55

My AC now takes a little bit to get cold when I turn it on. It never used to do that. I have checked freon level at the low pressure port and it tells me the level is at its max. What else could be causing the air to take some time to get cold?

Post by **jimmy57** » 24 Mar 2012, 15:18

Did you run the engine at fast idle (1200-1500) when doing the check? If not then the pressures are not valid for testing.
A safe effective thing to do is to add 1/2 standard can of refrigerant and see if it cools better. This will tell you if it is low. If it is something else then the 6 ounces of refrigerant you added isn't going to cause harm and the correct amount will be added when the system is repaired.

On edit: I see your XC90 is a 2008. 2005 and later V8 XC90's and all made 2007 and later have variable displacement compressors.The engine speed still needs to be high idled for checks but the VC introduces another possibility: the compressor displacement control solenoid or signalling from engine control module can be problems causing low cooling on a system full of refrigerant.

idh63 · Post by **idh63** » 06 Jul 2015, 06:09

I know this is an old thread, however, my 2007 XC90 V8 is doing the exact same thing. It takes about 10 minutes to really get cold air at the vent when my car has been in the garage. Most of my local errands are 10 or less mins. so basically, no AC.

I managed to get my card in to my mechanic who told me that his sources say that only Volvo can repair this problem, it requires a software update, it's a dealer only repair, and I should "take some lube with me". Now, I am in the tech business and a software update sounds a little far fetched.

Does any body know if this really is a dealer only repair?

Post by **jimmy57** » 06 Jul 2015, 06:45

It is not a software repair.
That XC90 has variable displacement compressor and the electric compressor control solenoid sticks. When the compressor gets warm often the expansion will allow the solenoid to operate and the compressor will not pump as it needs to and it will cool. If this describes your problem then the solenoid or a new compressor with solenoid will fix it.
The solenoid is operated by the ECM and is monitored there. The evaporator temperature is monitored by the CCM and it sends request for compressor function level to the ECM.

Kruzen · Post by **Kruzen** » 29 Jul 2015, 15:27

My 2008 does the same. Just took it to two different auto shops and both confirmed the compressor is bad. Big $$$ to repair. They quoted $1130.00. I looked on Ebay and can get a rebuilt compressor with clutch for $240. I think I might go that way. Any suggestions?

Turbo_Boss · Post by **Turbo_Boss** » 19 Oct 2015, 14:35

jimmy57 wrote:It is not a software repair.
That XC90 has variable displacement compressor and the electric compressor control solenoid sticks. When the compressor gets warm often the expansion will allow the solenoid to operate and the compressor will not pump as it needs to and it will cool. If this describes your problem then the solenoid or a new compressor with solenoid will fix it.
The solenoid is operated by the ECM and is monitored there. The evaporator temperature is monitored by the CCM and it sends request for compressor function level to the ECM.

Hey Jimmy57, My 2008 XC90 3.2L with 75,000kms is doing the same. In my case it take like 2 minutes to beguin to cool.

Do you know if it posible to replace the displacement control solenoid on the compressor without removing the compressor from the engine?

Thx for your help

Isaac

Post by **jimmy57** » 19 Oct 2015, 21:10

Yes but it requires evacuating refrigerant from system as the valve is in the pressurized part of system. After it is installed it will then need be recharged.

Turbo_Boss · Post by **Turbo_Boss** » 19 Oct 2015, 22:38

jimmy57 wrote:Yes but it requires evacuating refrigerant from system as the valve is in the pressurized part of system. After it is installed it will then need be recharged.

Hey Jimmy57,

I will keep using my AC as is since it only take 2 minutes to beguin to cool but if it get worst, I will change that valve.

Thx for your time and help.

Isaac

rudva · Post by **rudva** » 29 Jun 2016, 16:16

Does anyone had a video o instructions manual with "How to change the A/C compressor" for 2008 XC90 3.2L?