Inaccurate temperature gauge reading

[rgs455]

My gauge has been reading about 220 but the scan tool reads 190. Has anyone run across this issue?

Thanks!

 

[Chuck Leeper]

What gauge might you be using?

 

[rgs455]

Original GNX SW gauge.

 

[nonosv6]

Sounds like a bad sending unit for the gauge or maybe a loose connection or melted wire corrosion on sending unit bad ground? Those are just some thoughts. Do you have anything that you can use to check the actual temp of the engine to verify which is incorrect ? Like a temp probe for a multi meter or a temp gun? Maybe even a cooking thermometer ? But I would start by verifying the temp then going from there.


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[Boost231]

Depends on the sensor location. Both of them could be correct

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