I just replaced the oil pump, oil pump seals, crank and cam seals and timing belts on my 88 XT. The car has 194,000 miles on it. I have had it for 3 years now and I finally decided to do some real work on it. When I got it the car never had oil pressure and it had that typical lifter noise. After changing the oil pump and the other parts it seems to run much better. No more lifter noise. Just no oil pressure still. Could it be the sending unit? Or maybe the gauge itself in the dash. The sending unit appears to be the original unit. Can anyone help me out here. Thanks.