2000 Lincoln Town Car Blower fan varies by itself

2000 LINCOLN TOWN CAR
12,200 MILES • V8 • 4WD • AUTOMATIC
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NICHOLASANTHONY
  • MEMBER
  • 1 POST
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.
Jan 3, 2009 at 4:47 PM
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2CARPRO JACK
  • CAR REPAIR CONTRIBUTOR
  • 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
Jan 6, 2009 at 12:06 PM
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