1983 Nissan 720 Engine Cylinder Head Temperature Sensor

[brentboyz92]

So I've just bought a 83 Nissan 720 with a z24. The last owner cut wires for the temp sender and the engine cylinder head temperature sensor. So neither are hooked up nor has the ends. Can someone tell me what color wires go to the sensor an what single wire goes on the sender 

[datzenmike]

Sender for the temperature gauge is Yellow/Black (stripe)

 

Where is this 'temperature sensor' located? I think it's beside the temperature gauge sender near the thermostat and sensing coolant temperature rather than cylinder head temperatures.

 

Is this equipped with an ECC carburetor? Does it have a 7 pin round electrical connector at back of carburetor and an O²  sensor in the exhaust manifold??? 

[brentboyz92]

18 hours ago, datzenmike said:

Sender for the temperature gauge is Yellow/Black (stripe)

 

Where is this 'temperature sensor' located? I think it's beside the temperature gauge sender near the thermostat and sensing coolant temperature rather than cylinder head temperatures.

 

Is this equipped with an ECC carburetor? Does it have a 7 pin round electrical connector at back of carburetor and an O²  sensor in the exhaust manifold??? 

 

[brentboyz92]

The lose wires I have are solid yellow yellow with an orange stripe and a blue and white. The sensor is right beside the temp sender. Mine has a o2 sensor but has a aftermarket carburetor that has 2 wires 

[datzenmike]

Yeah, that would have been a ECC or feedback carburetor originally. Still got the round 6 pin connector at the rear right side  of carburetor? The ECC carburetor needs to know how warmed up the engine is to set the mixture solenoid duty cycle.

[Thomas Perkins]

Mike,here is my ground cable coming from my battery tray.The battery ground goes to battery tray.Then to the power steering bracket as you see.Right below the blue compressor wire.Here is my sender and sensor.I had to add the sensor with black and red wire type cause the original one dry rotted.The sender also dry rotted so I use a male connector.Both of those are lifetime warranty parts.

Edited December 1, 2024 by Thomas Perkins

[datzenmike]

Possibly the old location is where the sensor is now? I don't know but fairly sure that is where the ground used to be. No big deal I may be wrong.

[Thomas Perkins]

Been like that since I had the truck and original owner never touched anything under hood ,had 108,000 miles when I bought it,now has 395,000 miles.I always put everything back in same spot.

[datzenmike]

Oh I'm sure it was Tommy. I meant maybe the earlier engines that didn't have or need the sensor had it there and when they changed things and needed a place for a sensor they had a spot already, and the ground isn't critical where it goes. 

[brentboyz92]

No there's no 7 pin plug  

[datzenmike]

17 hours ago, brentboyz92 said:

The lose wires I have are solid yellow yellow with an orange stripe and a blue and white. The sensor is right beside the temp sender. Mine has a o2 sensor but has a aftermarket carburetor that has 2 wires 

 

 

 Have to ask yourself why is there an O² sensor and why the temperature sensor then??? (temperature sender for the temperature gauge yes)  But both have no use on a carburetor engine. 

 

That round six pin connector must be there tucked away. 

 

 

17 hours ago, brentboyz92 said:

... Mine has a o2 sensor but has a aftermarket carburetor that has 2 wires 

 

Where do the two wires go? Are they spliced into two other wires?

[brentboyz92]

They go to a stock connector on the wire harness one is for electric choke the other in not sure of. 

[brentboyz92]

I'm assuming the o2 sensor works along with the two sensors that are hooked up to the vacuum system. All I want is to know is what wire goes to what on the temp sender and sensor bc I don't have a temp gauge and I don't like running without one

[datzenmike]

O² sensors are used by an ECU to read the oxygen content in the exhaust so it can make corrections in an EFI or an ECC carburetor that is controllable. An ordinary carburetor has no control. Therefore if the ECC is replaced by a normal carburetor this makes the sensor superfluous, doesn't matter where the wires go that aren't being used.

 

1 hour ago, brentboyz92 said:

They go to a stock connector on the wire harness one is for electric choke the other in not sure of. 

 

Yes, one is the electric choke heater the other will be the idle cut solenoid.