Hey guys, A friend recently purchased a 1999 gsr which allegedly needed a head gasket. Upon further inspection it seems there is a plethora of things wrong with the car but nothing to do with the head gasket.

Anyways the previous owner was convinced oil was seeping between the head and the block but after looking at it one of the sensors on the transmission side of the head is leaking internally and needs replacement.

The sensor is located on the back of the head between the vtec solenoid and the thermostat housing. There are 2 sensors right next to eachother on the lower back of the head and the one im looking to identify is more inward.

If anyone could possibly provide me with a head diagram for the car so i could identify the sensor it would be greatly appreciated.

 

the only sensors on that side are coolant sensors (aside from the obvious ones on the vtec solenoid). an oil leak is most likely from your distributor, cam plug, or vtec solenoid.

 

 

looks to be the TW sensor, what does that stand for?? thanks man! appreciate it!

 

anybody can tell me what the TW sensor stands for??? or a link?

 

its the coolant temp sensor.