well you said it. Oil pressure switch or oil pressure sending unit.most cars have both.If it has one wire it is an oil pressure sending unit. if it has a plug with 2 or more wires it is an oil pressure switch and sends a signal to the onboard computer. remove the wire either a nut or usually a plug.some sending units take a special socket but if you can get a wrench on it turn it counter clock wise and unscrew it. when you get the new one it will have a red material on the threads, this is a sealant.thread the new switch snug and put you plug back on.
how do you replace a fitting from a high pressure oil pump that is leaking oil in a 2001 ford F350 diesel truck?
Increase the gland steam pressure if air is leaking in. If gland steam is leaking out, replace the seals. If the leak is in the casing, repair or replace the damaged parts.
Replace the pressure relief valve.
These are HIGH pressure cooling lines; make sure you replace them with the SAME quality lines or they will rupture and leave you stranded. You often need a flare nut wrench set to remove them as they can be very tight. If they are just barely seeping I would not replace them ,but if in fact they are LEAKING then you need to update them.
There are about 8 freeze plugs which one is leaking?
Leaking around the stem when on, replace or add to the packing around the stem. Leaking when shut off, replace the washer.
Replace it.
Your coolant pump is behined the fan, you will have to replace the water pump.
If the hose is leaking, replace it.
You can not replace just the tire pressure sensor on a Boxster. You will need to replace the whole sensor. The sensor is located inside the tire assembly.
Replace the part that is leaking
Replace seals