99 Jaguar XJ8 base model, and I can't tell at all if any air is coming out of that vent. I have switched from heat to air conditioning, and it's still the same. I have no clue on how to fix that situation.

Any help in this would be greatly appreciated

 

You're in the wrong forum. This is for the aluminium cars from 2003-on. Post in t he X308 forum.

 

Oh my that takes me back to the days of the old cow bell problem :-)