Its on the pass. side head in between the the 3rd and 4th spark plugs. The connector that plugs into the sensor just broke and I would to find out what it is so I replace that connector. Thanks

 

It almost sounds like the temperature sensor that turns the electric fan on and off. Do you have an electric fan?

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85 Z28 (Soon to be GMPP 350 HO)
Headman Hedders and matching y-pipe, Edelbrock Performer, Ram Air, Accell cap and rotor, Accell Supercoil, 160 stat, highflow Catco converter, absolutely no other smog equipment, B&M shift kit, Rapidfires, numerous carb mods, and flex-a-light fan.

"If you think education is expensive, try ignorance."-Ben Franklin

 

I do have an electric fan. If that is the the temp. sensor, then this would probally be a good time to replace it with one of those switches that will turn my fan on at a lower temp. Anyway let me know what you think.

 

Yes. Replace it with the Hypertech sending unit and it will come with a new connector also. This was one of my best mods.

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'91 Z28 Blue/Silver ZZ4/ZF6
328.4 RWHP 363.5 RWTQ

 

It is the temperature sending unit to the gauge in the dash. As far as I know the switch for the fans is located on the passenger side tank of the radiator. Bob

 

No the temperature sensor that goes to the gauge is on the drivers side head. The sensor he is refering to IS the fan switch sensor.

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85 Z28 (Soon to be GMPP 350 HO)
Headman Hedders and matching y-pipe, Edelbrock Performer, Ram Air, Accell cap and rotor, Accell Supercoil, 160 stat, highflow Catco converter, absolutely no other smog equipment, B&M shift kit, Rapidfires, numerous carb mods, and flex-a-light fan.

"If you think education is expensive, try ignorance."-Ben Franklin

 

I agree with R Defever.

 

so we have come to an agreement on this, and It's alright to replace the unit with the one from hypertech??

 

My apologises i thought that was the gauge sensor and the drivers was the copmputer sensor....then the sensor in the radiator is for....?

 

I think the sensor on the driver side is the knock sensor, and the one in the radiator is what sends the signal to the temp guage in the dash.

 

the one on the pass. side block beside the starter is the knock sensor and the one on the head is the fan thermostat thing. i would like to know what the one on the radiator is too. i noticed there was nothing hooked to mine. perhaps why my fans still wouldnt work after changing the switch and the relay.

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87 Iroc-z and a 77 camaro currently being restored
http://satanzchild.isonfire.com

 

IIRC the sensor on the radiator is the low coolant sensor.



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Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, MSD 6AL, Aluminum Driveshaft, TB Coolant Bypass, Ported Plenum, Modified MAF, Cyclone Fuel Pump, JET Airfoil

Veiw my car at:http://www.geocities.com/transam85tpi/TransAm.html

 

great! thanks for the info on the sensor in the radiator as mines not connected either and wasn't sure if I missed something in the harness changeover.I pulled the entire harness out of my Malibu and replaced it with the entire (fusebox,lights,etc) harness from the GTA. Bob

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80 Chevy Malibu
305 TPI/700-R4
7.5 " 3.42 posi
Ported upper and lower intake,
214,224 duration .450I .465E lift
"worked" heads
22 lb injectors
custom chip in the works
-------------------------
complete frame-off done.
painting this fall.

 

So... Here's the final word? The gauge sending unit is in the driver's side head, the secondary fan switch is on the passenger's side, and the computer sending unit is at the front base of the manifold. Any disputes? - John '89 L98