The location of your oil pressure sending unit is right behind your distributor. there is a spitter there with two(at least on mine) sending units. I believe the one on the passenger side is a fuel pump shut off switch (when oil pressure is too low unless you have a mechanical one) and the one on the D.S. is the oil sending unit. I have an 86 GMC Sierra and that's the way it's situated on mine.
I hope everything goes well!
God bless, Howie
Just read somewhere else that it's at the back of the motor under the distributor.
Your fuel sending unit is in the gas tank, mounted from the top.
wire from sending unit may be grounded/shorted out
it is located on the bottom end of the head
What's the color code on a 1987 Chevy Caprice classic brougham
It is in the throttle body.
The voltage regulator is inside the alternator.
9 to 13 LBS. No lower are higher.
on the low pressure side
Could be a faulty temp sending unit.
It is right behind the distributor, screewed into the top of the block.
Just above the oil filter