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oil pressure guage

Engine

Vehicle Information: Model: 911T; Year: 1973; Body Type: Coupe; Engine (type, size, modifications): 2.4 - rebuilt to "E"; Total Mileage: 119k;

Hi Ed, Prior to resto, car sat for a long time. Have replaced the Tach, gas tank sending unit, oil temp sending unit, oil level sending unit. Currently having a low oil pressure reading problem. Have tested the oil pressure with a mechanical guage and we got good pressure. Engine runs cool, front cooler's thermostet still hasn't opened up yet (after 300 miles ).Q: Is there a oil pressure sending unit I've overlooked? My MFI engine has a electrical sending unit in the crankcase breather and just behind it is another type of sensor that sort of looks like a 3/4" galvanized cap with a wire. Is one of these the idiot light & the other a pressure sensor?Thanks S

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