HOW DO I INSTALL A MORE "MODERN" COOLANT TEMPERATURE SENSOR?

1990 Chevrolet Corvette

Tiny

danieljordan

September, 1, 2012 AT 7:00 PM

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.

Tiny

ASEMaster6371

September, 1, 2012 AT 8:16 PM

Coolant sensor is not for the temp gauge. That unit is on the left front head between the first 2 cylinders.

Roy

Tiny

KHLow2008

September, 1, 2012 AT 8:26 PM

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.

Tiny

hmac300

September, 1, 2012 AT 10:28 PM

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.

Tiny

danieljordan

September, 2, 2012 AT 2:49 AM

So the sensor on the rear right of the block doesn't affect my guage, the one by the thermostat does?

Tiny

KHLow2008

September, 2, 2012 AT 12:17 PM

Yes you are correct.

Tiny

danieljordan

September, 2, 2012 AT 2:22 PM

So is it the one under the TB just behind the Thermostat next to a small vacuum line?

Tiny

KHLow2008

September, 2, 2012 AT 2:32 PM

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.

Tiny

danieljordan

September, 2, 2012 AT 9:44 PM

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.

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