1997 Ford Taurus AC Compressor and Defrost

125,000 MILES • 6 CYL • FWD • AUTOMATIC
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JUSTDON
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Is the AC compressor supposed to stay running while the defrost is selected, or should it cycle on and off?

If it should cycle, what would be the cause of it staying on and not cycling while in defrost?

Thanks
Jun 19, 2010 at 12:47 PM
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MERLIN2021
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  • 17,250 POSTS
Can you explain what your problem is? this question is a bit tough to decipher....
Jun 19, 2010 at 12:52 PM
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JUSTDON
  • MEMBER
  • 161 POSTS
When the defrost is selected, the AC compressor comes on and stays running as long as the defrost is on. I wasn't sure if this is normal or if the compressor should cycle on and off while in defrost.
Jun 19, 2010 at 12:56 PM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
That depends on how hot and humid it is, 85-95 or above and it runs constantly, 70's it would cycle normally, say every minute or so. Use a manifold gauge set, or charging station(preferred method) to check charge level. The reason it runs is to remove condensation from the interior of the car, which fogs windows.
Jun 20, 2010 at 3:34 AM
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