1994 GTS Temperature Sensor

[gusthebus]

So far have gone through 3 aftermarket brands for the 1994 GTS Temperature Sensor, every single one gives the me the error beep for engine overheating, even if it is dead cold. I was wondering what brand you guys suggest. Thanks.

 

[exoh_e]

What I did recently, which is probably incorrect. Is I bought a used one and then to test it. I flashed a lighter under it. Maybe you have an underlying issue. I am a novice.

 

[gusthebus]

What I did recently, which is probably incorrect. Is I bought a used one and then to test it. I flashed a lighter under it. Maybe you have an underlying issue. I am a novice.

I’ll check out that lighter method, when I unplug from the sensor, it stops so it’s probably just bad sensors. Don’t know though.

 

[mikidymac]

The sensors are a simple switch that closes at a set temperature.

Easy test with a multi-meter. It should not have any continuity when at room temperature, if it does it is bad.

 

[gusthebus]

The sensors are a simple switch that closes at a set temperature.

Easy test with a multi-meter. It should not have any continuity when at room temperature, if it does it is bad.

Continuity does not occur at room temperature on any of them. I have used Duralast Temp Sensor TU89 and a Titan 757 Performance OEM replacement sensor. I’m at a lost.

 

[mikidymac]

Then you have a short somewhere else.
All the sensor does is ground the wire which activates the beeper.

 

[gusthebus]

Then you have a short somewhere else.
All the sensor does is ground the wire which activates the beeper.

Figured, i’ll look into what’s shorting out. Thanks!

 

[Grim]

Just an idea, turn it on without the wires connected to the sensor, see if it still goes off. That may tell you that the wire is shorted some where.