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Moderator
Join Date: Dec 2001
Posts: 9,569
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Heater Issues
When I crank the temperature knob all the way to the hottest setting (27C) I don't get any warm air from any vent. With the motor at operating temperature, the blower operates normally, and even blows hot air out the wheel wells like 964's do.
Does anybody know how to diagnose 964 HVAC issues? I fear that my recent stereo installation could have messed up a wire somewhere. Specifically, I would like to know how to test the heater rheostat, but would settle for knowing where the control box is located so I can trace the wires to it.
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'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20) |
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05-27-2003, 08:46 AM
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Registered
Join Date: May 2003
Location: New Zealand
Posts: 3
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John,
Your 'Control Box' is intergated with your heater panel and testing it usually requires the use of a Bosch Hammer. Beyond that an intimate knowlege of the system will be required to diagnose. If the problem started at the same time as your stereo instalation that's not a bad place to start looking. Checking some basics before you worry too much about rheostats is a good idea. Have a look at your fuses and also pipe connections to and from your mixing flaps. Mark |
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06-07-2003, 11:08 PM
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Registered
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Is it cold just one one side? If so you have a bad temperature contol motor.
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04-28-2011, 01:04 PM
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911 Twin Turbo
