1989 Ford Thunderbird speedometer

1989 FORD THUNDERBIRD
86,000 MILES • 6 CYL • 2WD • AUTOMATIC
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HANDYDANDY
  • MEMBER
  • 1 POST
speedo wavers 5-10 kph at highway speeds ,less erreatic at lower speeds . trans shifts normal
Jul 23, 2010 at 4:11 PM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
do you have the electronic instrument panel or the basic style? if basic then it should have a speedo cable which is probably getting kinked up. if it's electronic then the vehicle speed sensor (VSS) drive gear (where sensor connects to tranny) may have some damaged teeth .
Jul 23, 2010 at 6:56 PM
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