I have an 01 Lincoln Towncar where the HVAC blower speeds up and slows down. This takes place when I first start driving and when I have driven for a little while Hot or cold heat or AC. I have the automatic climate control system. When I take it to max fan speed it is little better butr slower it is worse. Do you guy think it is a blower motor or a relay problem or something else? I think this system was used on several other Ford products including the Mercury Grand Marquis and Ford Crown Victoria.