oil pressure sending unit, they go bad all the time. it is on the passenger side of the engine toward the firewall. and im willing to bet the govener teeth are worn causing your speedo and such not to work. just find where the cable goes to under your jeep and check it out.

out of all the jeeps in this town the d**n gremlin had to invade mine

I've done so much,with so little for so long i can practicly do anything with nothing