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Tach and Speedo going crazy!
This is my first post to this site, so here it goes.
I have a 2002 excursion with approx. 55,000 miles. Two weeks ago while driving down the highway the tach and speedo needles surged all the way to the left and then all the way back to the right. It was as if the battery was disconnected and reconnnected.
The following day it repeated the same pattern as above, but the radio, power locks and windows would not operate until the vehicle shut down for approximately 10 minutes.
It quit doing it last week and started again on Sunday.
I checked all fuses (there ok) and cleaned all battery terminals, and it still keeps doing the same thing.
Has anyone here experienced anything like this?
And is their an easy fix?
Thanks any help would be appreciated!