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I am trying to locate the Coolant Temp Sensor (ECU) 1989 G20

(1990 Chevrolet G Series Van (G20))
in Sacramento, CA on February 04, 2011
Shop tells me the coolant temp sensor voltage =0, and the thermostat is stuck open. I believe the thermostat is located on the engine block @ radiator return, but cannot find the coolant temp sensor. Can someone describe where to find it?
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Popular Answer
on March 10, 2011
its right next to the thermostat housing.
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