1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

sensor on water pump?!

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Old 11-04-03, 09:18 PM
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sensor on water pump?!

anyone know what is the thing (with 2 wires) at back of water pump, next to thermostate??
Old 11-04-03, 09:41 PM
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Its the water thermosonsor.
Old 11-04-03, 10:50 PM
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thermosensor?! what's that for?? if disconnect??
Old 11-04-03, 11:02 PM
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water temperature sensor, tells your guage in your dash what temperature your car's running at.

Why do you want to disconnect it?
Old 11-04-03, 11:23 PM
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but i got another temperature sensor on the engine block which is to my dash (a little one, next to oil presure sensor), if i disconnect this one, water temp in the dash won't work~
i tried to disconnect the one on the pump, gauge still work

i am looking for a place where i can put one more temp sensor for electronic fan controller
Old 11-04-03, 11:32 PM
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Originally posted by Keaponlaffen
water temperature sensor, tells your guage in your dash what temperature your car's running at.

Why do you want to disconnect it?
No, what your thinking of is under teh oil filter. That one is only one wire. I just had to jerry-rig mine up not too long ago. Took me a while to figure it out tho!

Reaction, is your car a SE? In the fuel injection system, the sensor lets the ECU know the tempature of the engine, so it can activate fast idle, a richer air/fuel mixture and other things needed when the enigne is cold. On the second gens, it also controls fuel pressure.

If you have a 12a, then I have no idea what it does. Disconnectit and see if the thing halls flat on its face. On a FC Fuel Injecton system once the sensor is disconnected the car is IMPOSSIBLE to start. But I dont think that would happen on a carb. Unplug it and tell us!
Old 11-04-03, 11:41 PM
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mine is a carby (48IDA) 12a. i tried disconnect it already, i didn't take a drive but engine can still start and idle normally.

Last edited by Rotor Reaction; 11-04-03 at 11:45 PM.
Old 11-05-03, 12:23 AM
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It's for the choke.
Old 11-05-03, 02:30 AM
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Jeff is correct. That is the heat sensor for the magnetic choke release. The stock temp sensor is located under the oil filter.

I've removed that thing and replaced it with the temp sensor for my Autometer water temp gauge, pennies and quaters hold my choke now. That's some custom **** right there.
Old 11-05-03, 02:38 AM
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I have a malfunctioning magnetic choke holder, so a penny works for me.
Old 11-05-03, 08:31 AM
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nm~ i think i just replace that with the new sensor i got.
thanks.
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