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Old 05-01-2005, 04:24 PM
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Default Water temp gauge question...

I keep reading that the water temp gauges in our cars are fake. Is that true? Why would GM do that?
Old 05-01-2005, 06:13 PM
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Unfortunately 99 and up don't reflect the actual temp - maybe too many questions on the fluctuation (real temps) on the 98's. Wish they never made the change.
Old 05-01-2005, 06:15 PM
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Originally Posted by Frosty
I keep reading that the water temp gauges in our cars are fake. Is that true? Why would GM do that?
It's true on '99 and newer Ls1s. GM doesn't want you to really know how hot these engines actually run and dumbing down the temperature gage was cheaper than designing a more adequate and capable cooling system.
Old 05-01-2005, 06:51 PM
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I don't like the idea of not actually knowing what's going on... Might it be possible to set up some kind of aftermarket temperature gauge if there is such a thing, or swap it out with a 98?
Old 05-01-2005, 06:57 PM
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The gauge reads 210 when the actual temperature is in the range from 180-226 degrees.
Old 05-01-2005, 07:15 PM
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I have a SLP fan switch and wired LED's to it, green for low - red for high. Knowing what my temps are set at it at least gives me an idea what's going on. With the switch in the middle/normal operating fan temps, I can watch them cycle on and off.
Old 05-01-2005, 08:02 PM
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I might just get a gauge for the A-pillar. I know it sounds corny but it drives me nuts not knowing what's going on in the engine.
Old 05-02-2005, 07:05 AM
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Originally Posted by Frosty
I might just get a gauge for the A-pillar. I know it sounds corny but it drives me nuts not knowing what's going on in the engine.
I've done that, and an oil temp gauge too, if you do it be sure to buy the 12 mm to 1/8 NPT adapter from
http://fittingsandadapters.com/
it's made from 5/8 hex steel. Most will recommend the well known brass adapter but the wall thickness is very thin and most people twist it off in the head during installation. The steel one is much stronger.
Old 05-02-2005, 07:36 AM
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They did it because of all the wasted warranty man hours spent diagnosing the following and similar "complaints" ---- "My temperature gauge keeps moving all around. Like, when I'm on the highway it gets really low, and when I'm in the city, it gets higher".

I don't blame GM. You have to keep in mind that people like us, that are into our cars, are a very small % of F body owners. Most of them could care less what the temperature really is, as long as it takes gas, starts and gets them where they are going.




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