Thunderbird V8-302 5.0L (1984)
Speedometer Module: Description and Operation
Digital Speedometer Operation
The digital electronic speedometer is located in the center of the electronic instrument cluster. It can display vehicle speeds from zero to a maximum of
85 mph (137 Km/H). For vehicle speeds exceeding these limits, the the reading is maintained at the maximum indication. Under drive conditions, it is
normal for the speedometer to display consecutive numbers during slow accelerations and decelerations and to skip several consecutive numbers during
quick starts or stops. Display updates are made approximately every half second in mph mode and every one-third second in Km/H mode. The vehicle
speed is displayed regardless of whether the vehicle is moving in the forward or reverse direction.
