Temperature Sensor/Gauge

[tayto]

has anyone ever experimenting with "calibrating" the temp gauge? when i was in aviation we would heat oil and use a thermometer to check the oil temp, then stick the sender in the oil and see what the gauge would read. I would think it would be a good idea to calibrate the gauge to the "hot" setting and let the needle fall wherever after that. there is a gm temp sensor chart floating around the internet for a temp to ohms i'll see if i can locate it

 

[PlayingWithTBI]

there is a gm temp sensor chart floating around the internet for a temp to ohms i'll see if i can locate it

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[tayto]

that's the one. i know this is for the ECM but i wonder if it is the same for the gauge....

 

[AuroraGirl]

that's the one. i know this is for the ECM but i wonder if it is the same for the gauge....

most definitely not since the gauge reads a far smaller range

 

[tayto]

most definitely not since the gauge reads a far smaller range

this is from a '92 gmt400 FSM. 1400 ohm (cold aka 100*f) and 55 ohm (hot aka 260*f) falls within reason to the CTS values posted, FWIW....

EDIT: by placing a resistor in place of the temp sensor, one could easily "recalibrate" their temp gauge by moving the needle. i will possibly try this weekend if i can find my stash of resistors

 

[tayto]

here is the one from a '98 gmt400 FSM....

 

[Caman96]

They should’ve made the gauge with no numbers and only 1 correct spot where needle should be.

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[PlayingWithTBI]

^^^Close enough

 

[Caman96]

^^^Close enough

Can you see post #56? I got a message saying it can’t be seen but waiting for approval.

 

[PlayingWithTBI]

Can you see post #56? I got a message saying it can’t be seen but waiting for approval.

Yeah, I saw it, enlarged it, and read it fine.