1990 Jaguar XJ6 Air circulation

98,000 MILES • 6 CYL • 2WD • AUTOMATIC
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GRN90JAG
  • MEMBER
  • 2 POSTS
My vehicle has the automatic climate control option Both blowers on the car are working, as it blows air at all 3 fan speed settings. When I am running on the economy setting (air conditioner off), when I set the temperature dial to a cooler setting, the system shifts the air flow to the center vents on the dash, and when i move the dial to a warmer setting, the flow shifts to the side vents on the dash, and heated air flows through these vents. This is how I believe this is supposed to operate. My problem is that in the economy setting,when I move the dial to a warmer setting for heat, the air going to the floor vents in the footwell and back seat through the console does not warm up and seems to be whatever the outside air temperature is. This means, of course, that I get cold air through the floor and rear vents in cold temperatures. When I am running the air conditioning in warmer weather, there is cold air through all of the vents. What is causing this problem?
May 23, 2008 at 7:51 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,667 POSTS
Hello, it sounds like you have a bend door operation error, has the heater code been replaced in that car?...if so the vacuum lines the control the system could be messed up causing your problem. Also the blend door itself can come dislodged from the pivot bar causing a "freewheel" effect. Finaly the electronic controller could be shorted commanding the wrong blend door function. Please let me know how it turns out.
May 26, 2008 at 9:25 AM
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