It is located about an inch to the right of the VTEC solenoid plug. It's basically a screw-in sensor, with a light blue or light green plug female plug. It's not common to see some h22a's with the sensor removed, and replaced with a bolt to plug it off. In order to use the correct ecu(p13, for example), you need this switch or your ecu will run in "Limp Mode"...6500rpm rev limit, sluggish, check-engine light, etc.
it is on the back of the engine block below the oil filter on the base model prelude. type sh model isn't as easy to find
If the switch is bad or you don't have enough oil pressure the ECU won't engage VTEC as to prevent damaging itself. Get a new switch.
On a 1991 Honda Prelude 2.1SI, the Oil Sensor is located slightly above the Oil Filter.
back of engine next to oil filter, close to the bottom, so you'll have to jack the car in the air.
on top of oil filter plate it has one wire
A pressure switch reads pressure not level.
Low oil pressure or failed oil pressure switch.Low oil pressure or failed oil pressure switch.
The oil pressure switch is located on the oil filter adapter. Find the oil filter and you should see the oil pressure switch.
where is the oil pressure switch on my 96 Yukon
oil pressure switch sends message to oil pressure gauge in dashboard,telling what the oil pressure in engine is
In a 1991 3.3l the oil pressure switch is located beside the oil filter
The Oil Pressure switch if broken off will drain "pump" the oil out of the engine very quickly.