Help my tach just stopped working for about 20 minutes on the highway then I shut it off and it started working again. I also got a check engine light so I pulled out my code reader and pulled a P0336...meaning something about a crankshaft sensor. But when a crank sensor goes bad it causes all kind of problems doesn't it or does it. Any help would be greatly appreciated. Thanks...

clean your battery terminals realy well then put them back on and see what happens. sounds like dirty conection. mine did that to. now it's just fine