Oil pressure switch

I have repaired the oil pressure unit and it still leaking.

You CAN replace the switch without removing the compressor and compressor bracket. I just did this on my wife’s 2005 Pacifica. I’m not sure if you can do it without getting behind the bumper and radiator though. To find out, I would first try this; take off passenger front tire and remove splash shield. The switch is towards the front of the car above the compressor set back 2 or 3 inches. Unplug the electrical connector with long needlenose pliers and a screwdriver. Now, with the proper oil pressure switch socket connected to a universal joint, reach in and slip it over the Oil Pressure Switch. Attach a socket extension bar to the universal joint, unscrew it and reverse process to install new one. If you can’t get to it just by removing the splash shield then try this; pop hood, remove top radiator cover, Headlights, grille plenum/bumper cover. Unbolt the 2 bolts that attach the radiator to the front crossmember. Gently lift the radiator so the bottom rubber bibs that go into the lower crossmember come out. Now, tilt the top of the entire radiator assembly (Radiator Fan, Radiator, Transmission Cooler, and condensor) forward. This should you give you enough room to be able to reach behind the bottom left corner of the radiator and access the Oil Pressure Switch. You won’t have to drain the coolant or evacuate the AC System if you do it this way. It’s a tight squeeze to get your hand in there behind the bottom left corner of the radiator and onto the oil pressure switch, but it’s definitely accessible. Like I said, I just did this 2 days ago. The only difference between what I described and what I actually did is that I removed the 2 AC System Pressure hoses that connect to the left side of the condenser, and then removed the condenser. The AC System has already been evacuated the day before while I was doing something else, so I knew it would be easier to just remove the hoses so I could gain a little more room for reaching behind the radiator. Best if luck! Lastly, MAKE SURE you apply thread sealant or the Oil Pressure Sensor will continue to drip/leak!

Six cylinder all wheel drive automatic 78,000 miles.

My oil light occasionally comes on while driving. If you pull over and turn the car off, then turn it back on, it goes off. The oil level is correct. The engine seems to be running smoothly and quietly. Seems to me the problem is the oil pressure sending unit.

So I bought one, and plan to install it myself. How hard can it be? It is just a big bolt that screws into the block. But I cannot find it on the block. Can you tell me where it is and how to access it?