Thread: Is the temperature gauge accurate?

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  1. #1 Is the temperature gauge accurate? 
    Summit670
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    Default 12-20-2008
    I have a 2002 GT 3.8L and the temp gauge indicates the engine isn't getting warm enough.

    160 is the first line and 210 is the next line with a temp number. There is a longer line in the middle of the two so I figure that is 185.

    The gauge is running midway between 160 & 185, therefore I'm guessing it is running about 173 degrees.

    I bought a new thermostat and rubber gasket today but it is like 5 degrees outside right now.

    Do you think my stat needs replacing & do I need to drain the radiator to do this or do I just unbolt the housing and hope the antifreeze doesn't pool up on the motor and make too much mess?

    Thanks

    Jim
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  2. #2 Re: Is the temperature gauge accurate? 
    Sabrewings
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    Default 12-20-2008
    It's accurate, but it's not linear. Each division in the gauge the higher you go is worth less than the previous.
    2004 Impala LS - got some mods sold!!!
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  3. #3 Re: Is the temperature gauge accurate? 
    Iron Indian
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    Default 12-22-2008
    I find both of my GP gauges off, by a bit actully. When I want to know realtime temp I refer to the Scanmasters i have mounted in each cars or if I want to log it I get my PT.
    Shawn W. Larsen

    2005 Pontiac GTO 6.0 LS2/A4... Stalled/Cam Only: 406 RWHP , 370 RWTQ

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