Jason R
Member
my wife's hyundai santa few's speedometer while driveing drops to zero and then bounces back and fourth every once in a while. Does any one have any ideas???
Thanks in advance.
Thanks in advance.
speedometer problems
- Thread starter Jason R
- Start date
Help Support Ford SportTrac Forum:
Michael Cacioppo
Well-Known Member
The speedo my be electrical driven, like most, rather than the old mechanical type. You may have a bad connection which drops the signal to the speedo.
EddieS'04
In Memoriam 1950-2022
What mikec said. Connection on either end or a bad sensor. Worst case the speedo..
Kevin Palmer
Well-Known Member
How it works is...
You have a speed sensor at the tranny/trans-axle.
It sends a signal to the ECM/PCM (Brain).
Which in turn sends a pulse to the Speedo.
Based on your description, I will bet the issue is within the speedo.
However, it is worth checking connections and pulling the speed sensor and making sure the gears/teeth are all good on both the sensor and the drive in the trans-axle.
Once the sensor is pulled, you can actually test it with a DVOM on the A/C scale if you so desire...
You have a speed sensor at the tranny/trans-axle.
It sends a signal to the ECM/PCM (Brain).
Which in turn sends a pulse to the Speedo.
Based on your description, I will bet the issue is within the speedo.
However, it is worth checking connections and pulling the speed sensor and making sure the gears/teeth are all good on both the sensor and the drive in the trans-axle.
Once the sensor is pulled, you can actually test it with a DVOM on the A/C scale if you so desire...
