Lost all oil pressure and the blazer shut off. its a 1985 2.8 v6. is there a automatic cut off in the car? And how hard is it to change the oil sending unit?

SOURCE: what is a oil sending unit on 99 chevy venture van?

easy to change u just need a special tool for removed on front of motor at right of oil filter its look like a coolant sensor or a little bottle with a connetor removed the connector and take the tool to remove

SOURCE: lost all oil pressure no oil getting to top of engine

mileage?..over heated? oil to top is function of oil pump and oil passageways ..bad worn lower engine (crankshaft/bearings)......oil pump push rod..under distributor driven gear down into block to oil pump in oil pan..clogged passages/oil filter/oil filter bypass...... do a oil pressure test while cranking from port on side of block low and determine if bottom end has the pressure first

SOURCE: fuel pump on 1985 chevrolet blazer s10 location..where is it??

gas tank

SOURCE: 2002 corvette oil pressure is at 97psi at idle

so what is solution

SOURCE: 1991 chevy S10 blazer fluctuating oil pressure

I assume from the year it has high mileage. With mileage comes wear in these engine's bearings allowing oil pressure to drop because of the excess clearance between cam and bearings, also the crank and bearings. When the engine is hot and idling the oil is thinner and goes by the bearings quicker. If you have good oil pressure while driving, I'd leave it alone, maybe use a thicker oil or some lucas additive. My 89 does the same thing sometimes in the summer, but don't remember it doing it this summer. I use Mobil-1 and an AC Delco filter.

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