Automobile Maintenance : Changing the Oil Pressure Switch

If dash warning light of engine oil pressure goes on and off intermittently, it means that either oil pressure switch has gone bad or that oil pressure is actually low. A low oil pressure may mean that either oil pump has gone bad or that engine itself has worn out if the oil level is ok. Most of the times, just changing your oil pressure switch would solve this problem. Here are some snaps of this work done on the 2.2L Petrol engine (Renault J7T)  and designed and manufactured by Francaise de Mécanique.



First of all locate your oil pressure sensor. Here its located on the exhaust side near the oil filter (encircled).

Disconnect the wire of the switch. This particular oil pressure switch has only one connection (positive), the negative or ground comes from the engine block itself.

Oil pressure switch removed  with a long socket . Unlike the temperature sensor, it has a hole in it.

Once the old switch removed, put new one. Some oil shall flow out but its not much.

Put back the electrical connector and its done.