XJ XJ8 / XJR ( X308 ) 1997 - 2003

Strange Air Conditioning Issue

 
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Old 05-15-2019, 09:34 PM
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Default Strange Air Conditioning Issue

Ok, it seems strange but maybe this is something common on these cars??

I've been noticing for awhile that the AC doesn't seem to be getting as cold as it should. The refrigerant pressures are all good and the blower works well. Today I noticed that the drivers side vents are blowing nice and cold as they should, but the air coming from the passenger side vents wasn't nearly as cold. Not hot, but definitely not cold.

Anyone else ever experienced this or have any pointers on what to check first?
 
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Old 05-16-2019, 11:21 AM
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Sounds like possibly a blend door? There are a few threads out there, this is just one I grabbed quick, but it could be?

https://www.jaguarforums.com/forum/x...cations-95861/
 
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Old 05-17-2019, 05:59 AM
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Is the return pipe getting cold or as we call sweating (like condensed water on a cold glass of liquid)?
start from page 1798 in the workshop manual
download from the beginning of forum or quick links
if it is not cold or sweating I suspect refrigerant charge, which means you have a leak which is usually found at the clutch on the compressor
it may have sucked in moisture causing refrigerant contamination
also, there is the tx valve can get stuck
and also maybe as simple as a vent flap stuck
so start at the top and let's go from there
Dutchy
 

Last edited by Dutchy; 05-17-2019 at 06:11 AM.
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Old 05-17-2019, 11:04 AM
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If it is a stuck motor, the thread charlzo posted has instructions for pulling climate control codes. Usually those will indicate if you have a stuck motor, and it's a quick and easy way to start diagnostics. Keep in mind the last 5 codes stay in memory even if the fault is resolved, unless they were cleared after repairs, so there could be old codes showing as well
 
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Old 05-17-2019, 05:18 PM
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Hi jagsandjeeps,

it may help us give you more accurate replies if you will please tell us the year, model and engine of your Jaguar. The climate control system designs vary greatly from model to model.

Cheers,

Don
 
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Old 05-18-2019, 11:52 PM
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Originally Posted by CharlzO View Post
Sounds like possibly a blend door? There are a few threads out there, this is just one I grabbed quick, but it could be?

https://www.jaguarforums.com/forum/x...cations-95861/
Thanks, that thread should be helpful. I didn't you could check codes using the HVAC control display. Hopefully I'll time to check it in the next few days.

BTW. Your XJR looks exactly like mine did when I first purchased it.
 
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Old 05-18-2019, 11:55 PM
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Originally Posted by Don B View Post
Hi jagsandjeeps,

it may help us give you more accurate replies if you will please tell us the year, model and engine of your Jaguar. The climate control system designs vary greatly from model to model.

Cheers,

Don
Yes, I just realized that I didn't note it in my post. It is a 2002 XJR. Drivers side side vents blow nice and cold, passenger side feels like ambient air. Car seems to cool down better if I turn off the air outlets on pass. side. It's not low on freon and the pressures are fine.
 

Last edited by jagsandjeeps; 05-19-2019 at 12:00 AM.
 
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