Based off of the information you have said, it appears it may be your vehicle speed sensor. I have attached the information about the speedometer. As it states, it takes input from the speed sensor. I have attached information on the sensor, location etc
The instrument panel cluster (IPC) displays the vehicle speed as determined by the engine control module (ECM)/power train control module (PCM). The ECM/PCM converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The IPC uses the vehicle speed signal circuit (4,000 pulses/mile ), class 2 message from the ECM/PCM in order to calculate the vehicle speed. If the IPC detects a malfunction in the vehicle speed signal circuit from the ECM/PCM, the IPC uses the class 2 message from the EBCM, indicating the vehicle speed as a backup. If the speedometer reaches (108 mph ) the fuel will shut-off, and it will turn back ON when the speedometer is at (106 mph ). The speedometer displays either miles or kilometers as requested by the activation of the english/metric button on the driver information center (DIC). The associated indicator (km/h or mph) illuminates.
Input Speed Sensor Replacement
Remove the case side cover.
Disconnect the transaxle wiring harness.
Remove the input speed sensor clip (441) from the case cover.
Remove the input speed sensor (440) from the case cover.
Inspect the input speed sensor (440) for the following conditions:
Damaged or missing magnet
Bent or missing electrical terminals
Damaged speed sensor clip (441)
Install the input speed sensor (440) into the case cover.
Install the input speed sensor clip (441) into the case cover.
Connect the transaxle wiring harness.
Install the case side cover.
Monday, October 20th, 2008 AT 5:48 PM