1991 Mercedes Benz 300te Heat from vents when heater not on

1991 MERCEDES BENZ 300TE
242,000 MILES • 6 CYL • FWD • AUTOMATIC
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COBENZ
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  • 1 POST
I recently had to take my car into a mechanic for engine overheating issues. They replaced the fan, thermostat and temp sensor but now I feel a great deal of heat through the vents but my A/C system is off. My key is very hot as well when I took it out of the ignition. It may also help to know that my A/C system is not working (no cold air at all when on any setting) I need to find out what is wrong quickly. Don't need more issues. thanks
Jul 31, 2010 at 1:21 AM
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MMPRINCE4000
  • ✓ASE Certified Mechanic
  • 8,548 POSTS
  • ASE Certified Mechanic
If heat is coming out vents with blower off, and temp set to cool, then the blend door is not shut.

Some are cable operated, some are electric.
Jul 31, 2010 at 10:43 AM
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