Originally Posted by thunderstar99
I was hoping someone here could help me out. I have a major oil leak on thre lower passenger side of the engine block. I wish I knew how to put a pic on here but will try to decribe it the best I can. There is a pipe(?) coming out and then it y's there is a black piece that sticks straight up toward the hood that has a single wire. The other side of the Y has another piece coming out and has two wires connected to it that is where my leak is located. I looked in the haynes manual and could find nothing. Stopped by Advance Auto Parts and they said that it was the oil pressure sensor. What they g=had looked like the piece sticking straight up to the hood. Any help would be greatly appreciated. I really need to get this fixed before I go to Afghanistan so the wife doesnt have to worry about it. Again thank you for your help
P.S. almost forgot 1990 4.2L I6
The one that is pointed up is the oil pressure sending unit. The one that points sideways is the oil pressure switch.
The OEM # I find for the OPSU is 5300 5218.
The OEM # I have for the OPS is J575 8695.
Good luck and keep safe!