Speedless Speedometer

speedometer

#1

I have a 1996 Mustang GT. The speedometer works some of the time and some of the time the needle does not move unless I tap on the lens on the dashboard. Sometimes the needle moves to the correct speed I’m going and sometimes it moves beyond the correct speed. I must then tap the dashboard lens again to try to bring it down to the correct speed. I have replacd the speed sensor on the transmission but it did no good. Any ideas? I have been told by a mechanic that I must replace the mechanism in the dash and that could cost over $400 just for the part. Thanks.


#2

Sounds about right. Flex cables and geared counters are history, and the “mechanism” is probably more electrical than mechanical. Not much to repair, just replace…


#3

Thanks for the reply.


#4

Since tapping it makes it work properly, YOU might be able to take it apart and find the electrical or mechanical fault that is causing the problem. I emphasize the YOU because it probably won’t be cost-effective to pay someone else to do it.


#5

With the cluster out look for “cold” solder joints that can be re-flowed (usually at the point on a board where a ribbon cable is attached)