2000 XJ - Dash Vent Problem
Hi all,
I have 2000 XJ turbo diesel which does not have any airflow from the face vents in the dash.
What does work is the air conditioning, heating, I can change air flow between the windscreen demister. There is no intermittent operation dependant upon vehicle speed, acceleration etc. The fan works through all 4 speeds. When on the face vents and the fan speed at 4, it sounds like the airflow is muffled / being blocked by something.
In the past I have isolated to vacuum (cant remember where as it was a while ago) and got the classic XJ fail to the demister with no ability to make any change at all.
Today I pulled some of the dash apart. When operating the vent selector from recirculation through to demist you could see 3 of the vacuum servos operating (the recirculation one on the left hand side of the dash near glove box, and 2 in behind the centre of the dash which looked liked they were for the vent/floor. I am not sure whether these two also control face vents).
I also did some wriggling of vacuum lines under / behind dash with no change.
At this stage I would appreciate some advice from others who may have come across this problem or heard of it before.
Thanks
jtc
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