Yea that is what I though first but I quickly ruled that out due to the absence a "y" shaped deal of christmas lights.
Bjorn will push you always in the right direction. Trust me, I know.
Oh yea, that guy is like a genius. I soak up pretty much everything he says along with ummm, getread ( I know thats not his name but I am drunk
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Your picture is of the oil pressure regulator. The unit consists of actually two regulators, engine oil and piston cooling. You are correct the oil pressure sending unit is on the passenger side rear of block (single wire as previously stated). You may be able to correct the haywire behavior by making sure it is grounded good to the block (no teflon tape) and the engine is properly grounded (wire strap on rear driver side of engine from lifter cover to firewall).
V/r Russ
I checked the engine ground strap. I don't think that is the cause. I guess I can check the actual sensor ground. I wiggled the wire and no avail. I think it is either the sending unit or the gauge. I will probably just replace it with a mechanical gauge as I don't care about originallity as I bought this as a toy not to restore to original. I know blasphemy.
I feel more comfortable with a mechanical anyways, I just figured if I could save a few bucks for tires, or a pyrometer, or any other mod.( I am stupid for not taking my isspro pyro, boost, and tranny temp gauges out of my first powerstroke or the autometer boost and pyro from my second one. Should have learned after I sold the first truck.) Anyways, thanks for the help all.
D