I am intermittently getting cold air from the left A/C vents and much warmer air from the right side vents. Next day cold air from both sides.

I am not getting any codes.

Ideas?

 

I would guess since you have cold air on one side and not the other, there is a problem with the trap doors in the system opening and closing...


not sure if Jaguar has foam on their trap doors I seen problem with foam pulling off on an old pickup and blocking air flow.