I think he means Thermometer :)
Get the engine up to operating temp (or pretty close) with the radiator cap
Don't rev the engine, or you'll get wet. When the dash gauge gets to 140*,
thermometer in there and see what you get.
If the gauge is reading low, that could be a problem. If the computer
it's still cold, it will run rich and you'll waste fuel, burn out the cats, and
the plugs. How to check the computer, you ask? I don't know.
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