tach on my 91 Mark VII is sporadic, malfunctioning
the tach on my 91 markVII is acting up it reads right for about 5 seconds the jumps to around 4 grand for another 5 seconds then goes back to the right reading and continues this cycle the whole time its running, just wondering if there is a ballast or relay for the tach that may have went bad or is it just the cmplete tach unit itself any input would b appreciated thanx
Ah! I know just the problem you're talking about. My Mark did that also. It is caused by a bad ground on one of the wires to your tach. The wire is orange and can be located right behind the kick-panel near your fuse box. There are two bundles of wire -- it is the orange wire in the smaller bundle. Also, your fuel gauge will no longer read full all the time.
Search Lincoln Mark VII Questions
Lincoln Mark VII Experts
Related Models For Sale