1990 Chevrolet Corvette Repair Question
How do I install a more "modern" coolant temperature sensor?
I grounded the second wire as you said, it still isn't reading the temperature. It bounces around the falls all the way down to 260 and twitches. Any other suggestions? Ground is good, verified withe a multimeter. I'm at a loss, I usually always figure these problems out on my own.
coolant sensor is not for the temp gauge. that unit is on the left front head between the first 2 cylinders.
24,789 answers provided
Yup, sending unit and ECT are two different thing. Disconnect the one that you have installed and note if the gauge works. This is to confirm if you are working at thr right place. The other thing is that you could have bought the wrong item, instead of sending unit you asked for temperature sensor.
teh temp sender is in the cylinder head normally the drivers side, ground the wire out and if the gauge goes to hot then it needs to be replaced.
17,749 answers provided
So the sensor on the rear right of the block doesn't affect my guage, the one by the thermostat does?
Yes you are correct.
So is it the one under the TB just behind the Thermostat next to a small vacuum line?
It should be a one connector sending unit. Dis connect it and turn ignition switch on. If gauges does not work, ground the wire and check if the gauge goes up to max.
It goes up to make and twitches rapidly at max temp. I think it needs a new wire. I kept the original single wire just cut the connector off and spliced in the new one.