Question about 2006 Hummer H3

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Changed the thermostat on my 2006 hummer h3 but temperature gauge is still at 3/4

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Their are 2 differant tempature sensors 1 is the ECT engine coolent temp sensor .This tells the computer the engine temp .
The other 1 controls the temp gauge tells it what is goeing or called engine coolant sensor for gauge dosn't have a code but its brass and a single wire and right around the T .stat and ECT sensor and basicly tells the gauge what to read work on resistance dosn't noramly cause a problem unless the connection is bad .Clean it likely be the end of your problem .

Posted on Apr 24, 2015

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Goes the gauge move at all, or does it always stay at 3/4? does it ever go hot? it could be the ECTs engine coolant temp sensor. or it could be in the instrument cluster. once you have checked all engine related components give this company a shout on the cluster
southernelectronics.com

Posted on Apr 24, 2015

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Check the timing, clean the radiator, check the fans.

Posted on Apr 24, 2015

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