My Car: 86 NA

So I followed a tutorial on making a light probe to diagnosis ecu error codes, got 3 short flashes and a pause, which means my Water Thermo Sensor failed.





Diagnostic Probe


Error code said its a two wire sensor behind the water thermostat housing, so I looked.....



Thermostat Sensor with only one wire....

Problem is the only sensor I found near the thermostat housing was a one wire....and I went to autozone to buy a replacement, and they only had a two wire one......same with atkinsrotary



Left: Autozone........Right: Original?

Please tell me I'm a noob and that another water thermo sensor with two wires is lurking in a nook I didnt see.

 

Uuuuuh where was your "factory" one plugged in?

 

Below the removed thermostat

 

Your original sensor isnt factory, i have no clue what that could be. The sensor they gave you appears to be the right one. There's suppose to be a 2 wire green female connect somewhere on the back side of the water pump housing.

 

Alright quick question do I remove the waterpump to see it? I've been searching the books and pdfs(no luck) for days and I need this car running for school on monday.....

Progress: Removed alternator for better view, still can't find it....

 

its that square green thing right next to the water hose

 

Sorry for being dumbfounded but I need a reference point. Is it(factory sensor) before the thermostat towards the radiator, or after the thermostat toward the waterpump. Or is it the same hole as the aftermarket sensor I pulled out as pictured above, meaning I just swap that out?

If I don't find it in a bit I'll just take out the whole water pump and look

 

https://www.rx7club.com/2nd-generati...ook-up-512268/

Post #10 in this link shows the sensor/location. Im pretty sure the factory harness connector is suppose to be green also.

 

 

That looks like a pipe plug, but i could be wrong

Does your car have a separate temp gauge? If so, thats what the long probe looking one was for, the one for the stock gauge is in the rear iron

 

I said plugged in, as in connector. Not threaded into neck. As that plug is nothing factory. But looks like someone pointed that out to you

 

Thats the ecu temp sensor

 

must be how the picture is than

 

 

Funny, i still don't see it, all i see is tasty jack

 

..and I'm thinkin that he created a HOOKAH out of the waterpump..lol!..remove cap..insert here..hahhaha!..

*do not mix coolant with Jack Daniels..