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coolant temp gauge reading low-how to test?--fixed

Posted: February 15, 2015, 9:16 am
by mrgoob
62 f250 with the 292. Temp gauge reading ~130 degrees after warmed up. Have a 180 degree thermostat in there. Heat works. Is there a way to test the one wire sensor or just buy one and replace it and go from there? Is there a way to test the gauge to make sure it is working correctly? Thanks.


new sensor $13, temp gauge now reading normal

Re: coolant temp gauge reading low-how to test?

Posted: February 15, 2015, 10:16 am
by unibody madness
thermometer comes to mind with engine running, radiator cap off, just as thermostat opens.
harbor freight has a point and shoot temp laser that works quite well if you want to test a closed system,check head temps ect..