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My temp guage just stopped working one day about a month ago. Does anyone have any suggestions on how to fix it? Is there a fuse or something related to the guage. All other instrument guages are working properly. Thanks for your suggestions and help.
 

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Re: Temp guage stopped

jtx6 said:
this must be a tuffy!
Check the diagnostic codes. Is a code present for one of the ECT sensors?
-Garrett
 

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the gauge itself isnt monitored by the diagnostics. near your CTS, youll find another smaller CTS with a single wire going to it. if that wire is still connected, you probably have an open circuit in it.


the gauge gets power when the key is on and the thermistor varies the resistance to GND based on temp (of course). an open wire gives a zero reading, a shorted to GND wire gives a full hot reading., so if the wire were intact, you could touch the spade terminal at the CTS to ground and have your gauge jump to full hot.


so yeah, check the CTS and its circuit first.
 

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Which engine do you have;)
 
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