oil pressure?

[Bodyman]

I have 93 Yukon 2dr 5.7 having oil pressure problem after driving for 10 to 15 miles engine warms up oil pressure drops from 28lbs to 10lbs stop at light bottoms out check gauge light comes on parked it just now my tech will pick up tommorow he said thinks its the oil pump just curious what some of u guys opinion would be.

 

[99Yukon_Z71]

This might sound stupid, but do you have the right amount of oil in there? Also, check the sending unit, but to be on the safe side I would replace the oil pump. If it still acts up then its going to be the sending unit behind the manifold, or the gauge itself.

 

[Bodyman]

Yeah checked it first thing i bought it from state college been service regularly runs great expect for this issue that just started.

 

[Biggwaukegan]

yo, heres whats wrong. You gotta worn out oil pump. Gonna have to take off the oil pan and put a new one in. Id go with a HP Meling. Im getting ready to do this on my 97 this weekand along with a new timing gear set and the new optima. Trust me replace the oil pump and you can thank me later

 

[blueflamed03]

if light is coming on, its reading low pressure, so for the mean time, until you can change oil pump, use thinner oil. How many miles on this?

 

[k gee]

Just curious...is the oil guage on our trucks a dummy guage or is it supposed to fluctuate with RPMs?

 

[Bodyman]

oil pressure

Thanks for your input guys my tech pulled oil pan today replaced oil pump also thought we would check rod bearings and and main they were pretty bad so while apart figured be a good time to replace them also Always something i think he was pretty fair $582.00 parts and labor. now its time to start on body and paint thats what i do for a living so atleast the labor's cheap.

 

[blueflamed03]

Just curious...is the oil guage on our trucks a dummy guage or is it supposed to fluctuate with RPMs?

it will fluctuate with temp of oil, and RPM of truck.

 

[99Yukon_Z71]

I hope he had the crank machined!!

 

[blueflamed03]

some good guys can slip new main bearings in from the bottom and never pull crank...