Testing a themocouple.
Turbo Mini Forums

Is there a way to test a thermocouple to see if its dead? I have a Hks guage that's showing a constant error. I've recently been working on the turbo and there's a possibility it may have been damaged. I've checked the wiring and all is good and no signs if visible damage. Can they be tested with a multimeter?

Cheers Ron

you might be able to I would expect a digital multimeter is low enough impedance, but the voltage swing is very small on them. the change is about 40 µV/°C for the common types so your looking at 10 milivolts change for 100deg c

Is it an intake temp one ron?

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

It's for the EGT. I will take the sensor out tomorrow night a see if I can test it cheers Joe.

A decent multimeter should do it, as this is what I used to use at work for testing them. They are pretty bomb proof tbh, they generally completely fail and go open circuit or work.

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1/4mile in 13.2sec @ 111 terminal on 15psi