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2000 Lincoln Town Car Blower fan varies by itself

Tiny
NICHOLASANTHONY
  • MEMBER
  • 2000 LINCOLN TOWN CAR
  • V8
  • 4WD
  • AUTOMATIC
  • 12,200 MILES
The blower fan on vent goes down and up by itself once it is turned on. Example: If the on vent is turned on and the blower fan set at the lowest level, in a few seconds--8 - 10--it begins to increase in intensity to its highest level. The noise interferes with me hearing the radio and is an annoyance. The vent air blows too loudly. If I turn the control up and then down it seems to modulate and return to a lower fan level, then in a minute or less resumes a higher fan velocity.
Can you advise me?

Thank you.
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Saturday, January 3rd, 2009 AT 4:47 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
First put thesystem into self-diagnostics to see if it detects a problem. With key on, engine off, press FLOOR and OFF at the same time, within 2 seconds press AUTO, this should put it in diagnostic mode. The codes will show up on the display, get back to me with any stored codes
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Tuesday, January 6th, 2009 AT 12:06 PM

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