1993 MERCURY COUGAR 1993 MERCUARY ISSUES

  • Tiny
  • Jkrich14
  • 1993 MERCURY COUGAR

Heater problem
1993 Mercury Cougar 6 cyl Two Wheel Drive Automatic

I have a 1993 mercury cougar that runs great but there's a slight problem with the heater. There is none. I really cant figure out what it is but here's the lowdown on what it does

the buttons work ok but the the off button sticks
there is a hissing noise when I turn on the other switches but no heat

the compressor works great

the radiator full and topped off

the thermostat is stuck open

thank you for your time

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Sunday, December 21st, 2008 AT 11:24 PM

1 Reply

  • Tiny
  • Bluelightnin6
  • EXPERT
  • 17,054 POSTS

Hissing noise indicates vacuum leak. Check vacuum hoses for any signs of leaks. Replace thermo.

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Sunday, December 21st, 2008 AT 11:29 PM

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