I was just driving along and noticed that my Tach was just sitting on 0rpm and my fuel gauge was pegged way fast full? Is there a common issue when the both stop at the same moment? they where working yesterday but not now. Spedo still works.

I'm amusing it's likely a cluster issue, maybe a good time to swap in my GT 120mph cluster.

------------------
1986 SE 3800SC/4t65eHD (12.871@104.96) I'll Sell it if you like
1985 GT 3800SC (swap in progress)

When the fuel gauge goes high you have infinite resistance....a break in the circuit....so I would check the ground.

mine was bad. connection. on. left rear of panel. when my tach an fuel guage stopped working...

------------------


87 GT
series 1 3800sc (7.597 @88.53 1.579 60ft)
(series II swap in progress)
85GT Northstar
86GT 3800 n/a

The plugs on the back have copper leads, and they pressure fit into the foil leads. If they get a bit of corrosion, you could easily lose both at once.

I'd clean those contacts with electronics contact cleaner and some fine sand paper. Gentle, but get them shiny.

That is the first thing to do.

Arn