AC not blowing cold, 2010 Jag XF Supercharged. Once i turn the AC to lowest setting air gets cold, and then i adjust the temp. It will then continue cooling/running as it should. Could this be the direct pressure sensing valve failing? Many thanks.

 

I’d be interested to hear if anyone has had their pressure sensing valve replaced?

https://www.google.com/amp/s/www.car...1420681139395/

 

It is going to the shop next Friday. Now that it is getting warmer outside here is what I have noticed with the AC. It will cool, but it is slow to cool. Will eventually end up w cold air from vents, but taking longer than it should.

 

Interesting.

On both my Jags, only on occasion, the A/C will blow warm for the first 2 or so miles, and then blow nice and cold for the rest of the trip. And it's pretty rare to do that on my white one. Maybe a couple times since we got it in 2011. On the grey XF, it's done is a few times in the past couple of months of daily driving. All other times the AC blows cold from the get go, and always does a good job.

It seems like that could be an intermittent sensor issue.

 

I have also been experiencing the same this past month. It will blow warm air while in park but once I get going it will slowly turn into cold air.

 

I experienced a on and off issue with my 2010 XF A/C and I took it to Jaguar and they fixed it. What they said was that the A/C was over charged. They drained the system then recharged the system using the weight of the coolant and not the pressure readings we are so familiar with.

Gus
JagRepair.com - Jaguar Repair Information Resource

 

Someone must have bought a can of the DIY refrigerant with the silly little gauge on the bottle that makes you think you're an expert A/C mechanic.

If you find yourself standing in front of those cans wanting to buy one, you know you're about to make things worse. Most of them contain stop leak, which never stops a leak, but has been known to f-up the entire system.

Life has definitely changed. Modern car AC systems have a very small margin for error on amount of refrigerant, either too much or too little, but most people don't know that because the cars from the 70's and 80's weren't so sensitive and they think they are the same now.

 

Did you ever find the solution? On my 12 XJ, I'm having the same issue as you described. The first couple miles or when it's idling it blows warm air. I thought it was low on refrigerant, I got it recharged for $130. Turns out that wasn't the issue, it's still blowing warm first couple miles. Reading all the complaints regarding the Direct Pressure Valve, I ordered one for $135. Now seeing your replies as well as others on this post describing the exact issue is giving me second thoughts to the Pressure Valve replacement.

 

The local shop I took it to claimed they could handle checking the AC system on a Jaguar. It turns out they were clueless on JLR vehicles and identified nothing. The vehicle is going to the local Jaguar dealership this Friday. I will post results as soon as I find out. Be aware there is a TSB that covers 2010 to 2016 for the Direct Pressure Sensing Valve as it must be prone to failure. TSB JTB00380NAS4

 

My XF-R is doing this as well. I'm going to have the dealer check it out.

 

AC issue resolved. Jaguar dealer confirmed my AC issue was indeed due to the failure of the direct pressure sensing valve. Work was performed under the previous mentioned TSB, consistent cold crisp air has returned. 450 dollars to sort out.

 

On the road again.

Gus
JagRepair.com - Jaguar Repair Information Resource

 

That's good to hear. And not a bad price for the work. The TSB says the compressor has to be removed to change the sensor. If that's the case, I am just going to DIY and just put a new compressor since I can buy a complete kit with new sensor and dryer for around $400.

https://www.coolairparts.com/index.p...roduct_id=4155

I just did a compressor change on my Lamborghini, so any other car will seem easy compared to that one!

 

I have the same issue. Turns out my cooling fan is runs super low or the coming on. Got the fan on 100% ac super cold. Now gotta figure out way the fan is not turning on right

 

That seems like you have a different problem. On mine, it will blow warm as if the compressor is not running at all for the first couple of miles, despite how fast I am going. So it's not fan dependent. And then it will blow great the rest of the trip even if I am in stop and go traffic where the fan has to do all the work for the A/C to function. If I had a fan problem, it would still blow cold when I am going fast at the beginning, and it wouldn't blow cold when I was stopped.

 

My issue is sort of similar to you guys. When I start the car, I have to let it set for some time (could be 5-10 minutes) before it gets cold. Also, sometimes I have to turn off the engine and then turn it back on and then it will start to get cold. Is this the direct pressure sensing valve?

 

There was a #24 code, but I cleared it and drove for a week and the system continued showing no faults despite blowing warm. Compressor kicked on normally, etc.