Hello,
I have a 1982 Mustang, 3.3. Last week the oil pressure gauge and temperature gauge shot to the high side. Fuel gauge was fine. We replaced the temperature sending unit and the oil pressure sending unit. Nothing changed. Today we replaced the instrument cluster voltage regulator and the oil pressure gauge and temperature gauge immediately shot to the high side and so did the fuel gauge.
We are at our wits end because we have no clue what to fix next.
Can someone give me guidance?
Thanks, Oceandog