2000 Lincoln Town Car Blower fan varies by itself

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 8:47 AM
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2CARPRO JACK
  • ✓Experienced 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
Jan 6, 2009 at 4:06 AM
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