1990 Lincoln Mark VII

Engine Mechanical problem
1990 Lincoln Mark VII V8 Two Wheel Drive Automatic

I bought a car in folrdia the oil pressure gauge stayed a low when the carplaned out while driving< I drove it the 450 miles home with no problems. I had the oil sending unit changed, now the pressure is nom when driving but when I stop or let off the gas the pressure is burried at LOW! Do I need to replace everything to do with the oil pump{oil pump, hex shaft, screen?}? What do I do?
February 10, 2010.

Hi cjwilliams, Welcome to 2carpros and TY for the donation

Sir, if the OPSU been replaced and continues to have low pressure and there's no engine knocking noises on bottom engine or top end-I'll will start at the oil pump by actually checking the oil pressure with a mechanical gauge to rule it out-

Feb 10, 2010.