SOURCE: 2002 ford focus 1.4l ,73000mls,speedometer problem.
it is the vss (vehicle speed sensor). i had the same problem, cost £35 for sensor and clip. its behind the gearbox. very awkward job but can be done yourself. the hardest part is getting the pin out, you need a very good pair of molegrips and a lot of patience.
SOURCE: Fluctuating Speedometer
The speed senser is mounted on the transmission. This device is an slocrto magnatic motor and they cost less than $100 there held in with one bolt and have an electrical connector. Many times if it's bad enough the check engine light will come on. This problem but the heating up but work OK cild is a good chance the senser has failed.. The trans mission should be checked for overheating as the senser failure will be heal related
SOURCE: 2005 Mustang speedometer sometimes zeroes itself
ok got it. I have seen this problem at the ford dealer, here is what we have found, the needle is driven by a tiny electric motor called a "stepper motor" a stepper motor can go to and hold any position, such as when u are going a constant speed, this ittle motor sticks, they sell no parts for this speedo buy it can be repaired by a authorized factory repair center.
SOURCE: 2003 ford taurus starts, won't move
CHECK TRANSMISSION FLUID LEVEL COULD BE LOW.IF ALL IS GOOD DO A FILTER + FLUID CHANGE.BEFORE GETTING READY FOR TRANSMISSION OVER HAUL.
SOURCE: I have the same problem
Hi,
It seems more like a problem with cable than speed sensor. What i have seen - In case if the speedometer is accurate at lower speed and fluctuates at higher speed, then it could be a speed sensor.However, if the speedometer is reading zero at lower speed and fluctuates at higher speed, more often it is ' speedometer cable '.But , i cannot rule out speed sensor.
Let me know,if needed further assistance.
Hope i helped you.
Thanks for using ' Fixya ' and have a nice day!!
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