JoshB 240Z Posted October 18, 2002 Share Posted October 18, 2002 Are you talking about the signal from the Cylinder Head Temperature Sensor? If so, the signal wire is yellow/green and terminates at pin #23 of the ECU. Josh Quote Link to comment Share on other sites More sharing options...
bumble zee Posted October 19, 2002 Author Share Posted October 19, 2002 no the water temp sensor on the thermostat housing.. not the one sending the signal to the gauge, the one that sends the signal to the ecu.. Quote Link to comment Share on other sites More sharing options...
mike240zt Posted October 19, 2002 Share Posted October 19, 2002 to my understanding that sensor does not goto the eccu but the thermotime switch incorporated in the auto. Read that around here somewhere haven't verified it for myself yet. Quote Link to comment Share on other sites More sharing options...
JoshB 240Z Posted October 19, 2002 Share Posted October 19, 2002 There should be two sensors/senders in the thermostat housing. These sensors go to the Water Temp gauge in the dash and the second sensor is for the thermotime switch which runs the fuel injector cooling fan. The gauge sender wire is yellow and the thermotime sender is white. Neither of these wires run to the ECU rather they go to the vehicle main harness. On the turbo EFI the ECU receives the engine temperature signal from the CHTS. Josh Quote Link to comment Share on other sites More sharing options...
bumble zee Posted October 19, 2002 Author Share Posted October 19, 2002 what is the pin number on the ecu for the water temp sensor that sends the signal to the ecu?? Quote Link to comment Share on other sites More sharing options...
Mike kZ Posted October 19, 2002 Share Posted October 19, 2002 For what kind of engine? Quote Link to comment Share on other sites More sharing options...
bumble zee Posted October 19, 2002 Author Share Posted October 19, 2002 81zxt Quote Link to comment Share on other sites More sharing options...
bumble zee Posted October 19, 2002 Author Share Posted October 19, 2002 this is for a turbo, what is the chts?? and where is it at?? Quote Link to comment Share on other sites More sharing options...
bumble zee Posted October 19, 2002 Author Share Posted October 19, 2002 ok, head temp sensor.. got ya now i have put 2 of those in and it does the same thing... and if i unplug it, it runs extremly rich, like it supposed to. Quote Link to comment Share on other sites More sharing options...
bumble zee Posted October 19, 2002 Author Share Posted October 19, 2002 ok... checked the head temp sensor, no broken wires there, but i checked both wires, are they supposed to be grounded?? cuz when i check them to the negitive batt post, ohms came to 0 on the sensor side connection. Quote Link to comment Share on other sites More sharing options...
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