97 lincoln mark viii oil pressure light always on. oil pressure good. new sender

Zero compression, engine is shot. Blown Intake and head gaskets can let water in the pistons, But usually not all would have water. Intakes can dump water in the oil also.

oil pressure too low,check oil level,tune up,fuel filter,air filter.

Replace the oil pressure sending unit on the engine near the oil filter.

There may be a wire loose. Lie on the driver floorboard with a flashlight shining up into the dash panel. Look up above the brake pedal. Tighten any loose connections you see. Good luck.

Check the connection where the wire plugs onto the sender unit. If it's loose, or the wire shorts out to the body, it might flicker. If this isn't the problem, unscrew the sender unit and check your oil pressure using an oil pressure gauge screwed into the same hole. The pressure should be above 40 psi if my mind serves me correct. If it's too low you'll have to replace or check the oil pump. Did you replace the oil filter and oil recently? If the filter is blocked or the oil is old it might also cause the pressure to drop too low.

what do you need? I have a Mark VIII wiring manual you can have for $10.

inspect all of the sockets that the bulbs plug into. you may have a short in some of them. they can get hot and melt the plastic sockets. causing the bulbs not to work. or try replacing the wiring harness for all the rear lights. i found one in the junkyard for my cougar. and it works fine now, good luck

CHECK THE WIRING OR THE HEAD LIGHT FOR IT TO BE BLOWN, ALSO CHECK FUSES

Try to repalce the oil pressure send unit.