Cooling Fan

1997 AUDI CABRIOLET
110,000 MILES
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BACCO
  • MEMBER
  • 1 POST
When car is idling, even if cool outside,cooling fan will engage with an increase in RPM, about every 3 minutes. Is this normal for this car or a sign of a future problem. Is this something unique to this engine that it revs up like this?
Nov 21, 2011 at 9:01 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Have the coolant temperature sensor checked-when the fan kicks in the idle has to increase to compensate for the additional electrical load-dunno if yours is normal-could be
Nov 21, 2011 at 9:15 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
It's probably the A/C compressor cycling on and off with the defroster. The computer automatically increases the idle for the extra load of the compressor.
Nov 21, 2011 at 9:23 AM
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