1998 Ford Taurus Speedometer Drops Over Bumps

1998 FORD TAURUS
Avatar
IDPASSR
  • MEMBER
  • 1 POST
Just bought a 1998 SHO. 89k mileage. Noticed something on a recent highway trip. When the car runs over a bump, like the seam in the highway at a bridge, the speedometer needle will drop and then go back to normal. And if you have the cruise control engaged, the engine will race like you were pressing the accellerator.

Under normal driving, cruise control off, nothing happens, but it's kinda annoying when the car feels like it's taking off while the cruise control is on...

Thanks in advance!
George
Dec 15, 2006 at 1:42 PM
Advertisement
Avatar
CARUNDELL
  • ✓Experienced Mechanic
  • 602 POSTS
[quote:69baaa68c4="idpassr"]Just bought a 1998 SHO. 89k mileage. Noticed something on a recent highway trip. When the car runs over a bump, like the seam in the highway at a bridge, the speedometer needle will drop and then go back to normal. And if you have the cruise control engaged, the engine will race like you were pressing the accellerator.

Under normal driving, cruise control off, nothing happens, but it's kinda annoying when the car feels like it's taking off while the cruise control is on...

Thanks in advance!
George[/quote:69baaa68c4]

Hey George,
Interesting problem. Sounds like there could be a loose connection @ the speed control module. I would also check the connections at the speed sensor in the trans. Let us know

Chris
Dec 15, 2006 at 8:14 PM

Suggested Repair

Check for a loose connection at the speed control module and inspect the connections at the transmission speed sensor.

Conversation Summary

The owner of a 1998 Ford Taurus SHO with 89,000 miles reports that the speedometer needle drops briefly when the car hits a bump, such as a highway bridge seam, then returns to normal. With cruise control engaged, the engine races as if the accelerator were pressed. An expert suggested checking for a loose connection at the speed control module and inspecting the connections at the transmission speed sensor.

Related Repair Questions

Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle