obs902500
Newbie
I have a 90 c2500 with moon gauges, bought the truck then blew a head gasket and replaced it myslef, got the truck running and had been running good since then but recently my gauges have been acting weird, at first my oil pressure read 50 psi at idle (i changed oil pump to a high volume one) now it’s reading no more than the first mark on cold and goes all the way down when warm causing the check gauges light to come on, hooked up a mec gauge and oil pressure reads 50 cold around 20 hot on idle so that’s good, my battery voltage gauge also started reading just at the first mark not passing it, i just replaced battery, starter, and alternator, then my gas gauge started reading the same not going passed the first mark when full and gauge fully disappearing when low tried to look at grounds but not sure what could be happening all grounds look like they are connected good, any help would be really appreciated