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The oil pump supplies the oil to the engine bearings where it is forced from one to the other. That is what creates the oil pressure. The pressure is transmitted to the gauge by way of a sending unit. You need a mechanical gauge to see what the true pressure is so as to determine if the sending unit is bad. A defective oil filter relief valve will cause a pressure fluctuation. The pressure will increase from an idle as you accelerate. You will need to check and see what normal operating pressure is and at what RPM.
What else can I help you with?
Which relay is the starter relay on a 1994 Buick lesabre?
Which relay is the starter relay on a 1994 buick lesabre
Where is the fuel pump relay located on a 1994 Buick lesabre?
fuel pump relay location in 1994 buick lesabre
Where is the computer in a 1994 Buick lesabre?
On my 1994 Lesabre it is under the dash about center at edge of carpeting
How do you replace a rear wheel bearing on a 1994 Buick LeSabre?
I have a shimmy or small vibration while driving the interstate on my 1994 buick lesabre - if i was to check the front and rear bearings - how would i do that and what would i look for
FAQ10what would cause a 1994 Buick LeSabre v6 to shut off my self going down the road?
what would cause a 1994 Buick LeSabre v6 to turn off going down the road.
What type of brake fluid do you use in a 1994 Buick LeSabre?
Dot 3
How to replace a serpentine belt on 1994 buick lesabre?
replace tension put it on
How do you replace a wheel bearing on a 1994 Buick LeSabre?
AnswerFront or rear?front
Will doors on a 1994 Buick Lesabre fit on a 1997 Buick lesabre?
1997, 98 and 99 lesabres are supposed to bigger inside so check with a dealer or wrecking yard.
Where can you find the thermostat on a 1994 Buick LeSabre?
Should be at the end of the upper radiator hose.
Does a 1994 Buick lesabre with a 3.8 liter engine have a timing chain or belt?
chain
How do you change fuel pump on 1994 Buick lesabre limited?
Drop the fuel tank.
