Help-- Speedometer Glitch
 

Okay the speddo will drop to zero when I hit a Bump, it does have to be substantial bump not your run of the mill small ones. The annoying thing is this also resets the cruise. So where does the speedo pick the speed from and is this an easily fixed part?
thanks
m

Which car?

I guess the question isn't which car, but electronic speedo or not.

(Read sig closely, other two have been sold)

sorry 91 560 sel with electronic speedo. Just want to know what to look for. It works fine 98% of the time. Just annoying

im guessing ABS sensor on a non driving wheel.

OKay, Where is the pick up anyone know. I have relaced the abs sensors in the front earlier in the year when i did rotors and pads. But, If i am right they should not be related to the speedo pickup. It works fine unless I hit a good bump and is back within a couple of seconds.
thanks
m