Inaccurate factory temp gauge?

Discussion in '1970 - 1973 Specific' started by weim55, Dec 1, 2017.

  1. weim55

    weim55 Member

    Feb 23, 2017
    Same exact problem on two cars, a '70 and a '73. Temp reads low (below 100 engine) as it should with the engine cold. With the engine at operating temp (verified 195 with a lazer thermometer) the gauge is buried past 250. Ohmed out both sending units as the engine builds temp and the are OK. Verified them to be correct for year of Camaro with factory gauges. Anyone else encounter this problem?

    Steve weim55 Colorado
  2. COPO

    COPO Veteran Member Lifetime Gold Member

    Sep 15, 1999
    Ontario, Canada
    Those gauges were never accurate. They were meant to be a warning when you near the red zone. Get yourself a mechanical or electric gauge and place it where the clock is. I had a mechanical one for about 34 yrs before the capillary tube leaked out the gas from constantly hitting it when reading plugs. This time I bought an electric AutoMeter LED water temp gauge and it’s dead on.

    BTW, the 2-1/6” gauge fits perfectly where the clock is cause many
    Yrs ago, I had my oil pressure gauge in that spot and it looked
    very good. I had a piece of sponge with a hole in it for my
    mount sopport and it worked well keeping it in place.
    Last edited: Dec 1, 2017
  3. fvdillon

    fvdillon Veteran Member Lifetime Gold Member

    Jul 16, 2000
    Steve, I have the same problem with my 72 Z, be nice to figure out the problem. Jim

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