据说电阻坏常见,也便宜.先查电阻,后查风扇马达

没干过，搜索到几个。好像多半在手套盒子下边或后边

http://www.ford-trucks.com/forums/936188-1999-blower-fan-only-works-on-high-or-off.html

http://www.google.com/imgres?imgurl=http://i182.photobucket.com/albums/x294/Tbird100636/photo-61.jpg&imgrefurl=http://www.fordforums.com/f138/2003-taurus-blower-relay-something-issue-165254/&usg=__skHMzLGJTPy6S5DcV3kOOatwu60=&h=480&w=640&sz=48&hl=en&start=17&um=1&itbs=1&tbnid=FCJLN7drDhTnaM:&tbnh=103&tbnw=137&prev=/images%3Fq%3D2005%2Btaurus%2Bblower%2Bresistor%26um%3D1%26hl%3Den%26tbs%3Disch:1