The water temp gauge has a 'oil can' symbol that is flashing mostly when engine idles but sometimes when driving. I think this 'flashing' is indicating very low or zero oil pressure. The engine runs and sounds OK, plenty of power, no knocks, not like an engine sounds that is running without oil. Has plenty crankcase oil. Never uses any cranckcase oil.
Can the 'oil pressure sensor' be bad and engine and oil pump system is really OK? Car has 70K miles and runs OK.
After market oil pressure sensor costs $70. What is my risk, if I do not change the sensor, and I check oil level often as I do now? Can a junkyard part be used if cost is much less?
Is the sensor difficult to replace myself? Can bad wiring cause good sensor to appear bad? Do 87 MAXIMA have any history of oil pressure sensor troubles?
Thanks, Dave_s