I'm having problems with my 7 and I think the Water Temp Switch is to blame. The water temp switch lies on the bottom of the radiator on the drivers side. Its there with the two prong connectors on it but no wires going to it. Where the hell are they, I can't find them. Maybe someone could let me know where they go into the harness or where on the car I can meet up with them, Or what the wires look like so I can just splice into the harness somewhere and run my own wires to make it work. Any help is appreciated.

 

Actually Chris..that Is One of the Water temp senders..the other one is located at the Back of the Waterpump Under the Alternator Harness.The One at the Bottom of the rad Is connected with Two Small "bullet Connectors,I think the wires are Brown.The one at the back of the Waterpump has a connector that looks like a Regular Fuel injector Clip.

 

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/water-temp-switch-vs-water-thermo-sensor-556588/ read this also.and this https://www.rx7club.com/2nd-generation-specific-1986-1992-17/water-temp-switch-radiator-215705/

 

Thanks for the tip. I heard its just for emissions (which is all stripped off of this engine) but all my other RX-7's have it plugged and they run fine. So I'm just eliminating all the suspects for it not running

 

It's a switch that makes when the water temp in the radiator is above 65*. Controls the Relief solenoid which in turn controls the ACV operation. If you find the two bullet connectors, just jumper them together if you ever suspect the switch in the bottom of the radiator being bad.

Wrote about the same thing on your other post. The wires with two bullet connectors is *somewhere* on the Front harness b/t the engine fuse box area and the switches area. Fish about.