ok on a 93 94 there is no speedo cable it is all wired ,and the sensor for all 3 are working fine they are all sending ,but hit a bump and the 3 go nuts ,and why would all 3 go down if 2 are seperate they are related those 3, in a newer jeep they will be controlled by the computer just like the voltage regulator is run by the computer . i am wondering if it is a common problem with a ground that gets loose and causes this ...
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Originally Posted by cherokee_guy82
tach and fuel are electric, spedo may be depending on year... none of them are controlled by the computer in any case and may even be cause of a blown fuse. Not sure if yours is the same as mine, would guess so. Does your buzzer work w/ keys left in ignition or if lights left on while ign off and door open? if no, check the fuse block in spot #17 Part of it controls the instrument cluster
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