water temp sensor - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

the head · 08-27-2003, 10:38 AM

ok i need to put in an aftermarket temp sensor but i cannot figure out which of the two coolant sensors i am going to remove to do it in the FSM one is listed as the engine coolant temp sensor I think though this goes to the ECU the other referred to as the thermal transmitter appears to go out to the temp gauge i think that is the one i can remove without having problems arrise with the ECU but i would like to see if you all have any insights on it as well
this is for an SR

old_s13 · 08-27-2003, 12:09 PM

small 1 wire sensor is the gauge cluster water temp sensor
larger 2 wire sensor is for the ECU

I replaced the OEM water temp sensor with a VDO sensor (i use vdo gauges).

- Mike

the head · 08-27-2003, 12:26 PM

is it 1/8" bspt like the oil sender or is it another size?

DuffMan · 08-27-2003, 01:00 PM

The 2-wire plug that is RED goes to the ecu. The one-wire black plug goes to the stock gauge.

08-27-2003, 10:38 AM	#1
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	water temp sensor ok i need to put in an aftermarket temp sensor but i cannot figure out which of the two coolant sensors i am going to remove to do it in the FSM one is listed as the engine coolant temp sensor I think though this goes to the ECU the other referred to as the thermal transmitter appears to go out to the temp gauge i think that is the one i can remove without having problems arrise with the ECU but i would like to see if you all have any insights on it as well this is for an SR __________________ I never knew you could do that with an eggplant Last edited by the head; 08-27-2003 at 10:44 AM..

08-27-2003, 12:26 PM	#3
the head Nissanaholic! Join Date: Jul 2002 Location: in a dark room mastering the art of typing with one hand Posts: 2,164 Trader Rating: (3) Feedback Score: 3 reviews	is it 1/8" bspt like the oil sender or is it another size? __________________ I never knew you could do that with an eggplant

08-27-2003, 12:09 PM	#2
old_s13 BANNED Join Date: Nov 2001 Location: Los Angeles, CA. Posts: 2,824 Trader Rating: (0) Feedback Score: 0 reviews	small 1 wire sensor is the gauge cluster water temp sensor larger 2 wire sensor is for the ECU I replaced the OEM water temp sensor with a VDO sensor (i use vdo gauges). - Mike

08-27-2003, 01:00 PM	#4
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	The 2-wire plug that is RED goes to the ecu. The one-wire black plug goes to the stock gauge.