ok, so i took out the black box and the two 14mm plugs for catch can setup.
everything when well except the 14mm plug on the left,next to the ops. that plug had a sensor in it. finally found the right size socket to get it out. 34mm

my ? is what is that sensor for? it doesn't connect to any anything. it's green.
from all the pics i found online, those two block plugs doesn't have a sensor on it.

btw, it's on a jdm b16a block. n no oem oil cooler either.

thanks

will post a pic soon.

 

It's your oil pressure sending unit, it plugs into your harness via a little sheathed metal clip. Like the one on the side of your head(coolant temp sensor), but for your oil. The harness' plug will look the same though.

 

i don't think it's that cuz i tee off the opsu for the turbo feed line. this sensor is about an inch round/wide.

 

It could be a ghetto rigged knock sensor, pics would help. If it is a knock senor and your running OBD1 and tuned (I hope so you since it says 99 EM1 turbo) you will not need it.

 

ok, found some pics online of sensor.

1st pic is the sensor in green

2nd pic...no sensor on block plug.

 

Its an oil temp sensor used in the earlier B series blocks i believe obd0 and early obd1. Ive seen them on b18a motors

 

that's what i thought too. thanks

 

found this on an old thread

 

i wonder if u can hooked up those two sensor(black/red) to an aftermarket oil temp and coolant temp gauge.

 

They are just switches, not sensors. They are either closed or open.