Tach Sensor ?

[ZeroCool8891]

is there a such thing, the reason why im asking is because in my 91 the tach goes rite to redline and i changed out the cluster and it does the same thing, i was told that it is a tach senser i was wondering if this is true.

thanks

[NJSPEEDER]

The factory tach is wired through the dizzy I think on all HEI cars. Check those connections first.

-Tim

[bubba428]

theres a single wire that runs from the dizzy, I believe it is brown. if its small cap it runs from the ignition module

[camaroAL]

sounds like there might be a wiring problem other than the cluster or dist. after hacking the wiring out of my race car my tach and speedo do the same thing.

[Fast92RS]

The tach runs off the white wire from the coil with the small cap dist.

[ZeroCool8891]

yea there ptob is a wireing prob, becuz that doest work and the car doest start nomore. it starts then dies, then now it doesnt start at all i cut out prob 120 pounds of wireing that was put in from the org owner, so i think i might to switch dashes out and see what happens.