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Did a crate engine switch from original 350 to a ZZ4HO. Temp guage never went over 110 on old engine or new. Put in a new guage(roger's) and no change, so just installed a new correct temp sensor for a 1974 vette and guage goes to 230-235 and stays. Borrowed a pyrometer, checked radiator, housing and lines all measure 175. Haven't had any overheating symptoms so assume guage is not giving a correct reading. Anyone have knowledge of what may be going on?
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The sending unit is out of calibration with the gauge. One of the two needs changed. The sending unit is a lot easier.
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in Forum: C3 HVAC, Fuel, Emissions, and Exhaust
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