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Old 09-15-2013, 02:41 PM   #1
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Coolant Temp Sensor

Hi, I've got a 94 camaro 3.4. The cooling fan does not come on when temps hit 230+.
My husband hooked up the fan directly and it came on. Jump it at the relay and again it ran. He figured it must be the coolant sensor. I looked online and the sensor that the stores showed all hade two wires at the connector. My car only has one wire. Which is right?
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Old 09-15-2013, 05:54 PM   #2
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The sensor for the PCM is a two wire one.
The one for the gauge is one wire.

That said, it could be a relay issue, the relays do fail.
Do the low speed fans come on when the A/C is turned on?

96 T/A, Black/Graphite Leather, T-Tops, 6 speed, 10 speaker Delco/Bose "Monsoon"
Original owner, 207k miles and counting.
Total engine rebuild at 187,020 miles. AIR delete, bored .030 over.
Comp cams Xtreme Energy LT1 266HR-14 street cam and springs.
Custom leather interior at 190k miles. Total repaint 193k Miles
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