94 F150 Oil pressure gauge problem
I have a 94 F150 with 130,000 miles, still runs smooth. Just noticed that after about 5 minutes running, the oil gauge bounces a little then goes dead. There is no ticking or noise from the engine, and if I stop the engine, wait a minute, start it back up, the gauge goes to normal for about 2 minutes, then goes dead again. I replace the oil sending unit twice, and still the same. Is it the actual gauge thats bad, or is there a relay in between that I am missing??? Any help would be great!