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Why does the oil pressure in a 90 Chevy Beretta drop to 0 when the engine warms up?
Wiki User
∙ 14y ago
it may be the oil pressure sender located on the engine
Wiki User
∙ 14y ago
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Can a bad oil filter make you loose pressure as engine warms up?
No, warn engine parts will cause loss of oil pressure as the engine warms up, due to expansion betweeen moving parts. Hot oil is thinner.
You have a 1991 Chevy beretta is it best to check the oil with the car on or off?
The BEST oil level reading is obtained on flat level ground, with the engine and oil still cool. As oil warms up, it expands, and can travel further up the dipstick. This could provide an inaccurate reading, since there would be slightly less oil in the engine than stated.
1994 jeep wrangler Oil pressure drops to about 15 lbs at idle when it warms up?
yes Engine is wearing out.
What would cause the oil pressure to drop after engine warms up?
1 reason might b worn bearings
What should your Oil pressure be on your 5.7 93 suburban?
if i remember correctly when you first crank the engine the oil pressure should be around 60psi. after it warms up about 40psi.
What would cause a Chevy 350 engine to have oil pressure when cold and lose oil pressure when at running temp?
When the engine is cold, all the parts are tight. Meaning, the bearings, rods, and all have less gap. The oil is also thick. As the engine warms, the oil also warms making it lighter or more fluid. If the main bearings have too much gap, then with the warmer oil the oil flow will increase which in turn will lower the oil pressure. It would not be abnormal to start out with 50 or 60 lbs then have it reduced to 20 lbs at idle. Although the pressure would increase to around the 50 lbs. mark as the engine rev's up. If the oil pressure goes down to say 10 lbs, even at high rev's, then have the pressure checked with a mechanical gauge to confirm the reading and if so, well, time for a rebuild. Low oil pressure will not reach the outer parts of the engine and will eventually cause a lot of damage.
Why does my 94 Honda Passport have a loss of oil pressure after the engine warms up?
Oil gets thinner when its hot. Use a slightly higher viscosity.
Why would a 1994 Dodge van 250 3.9L sometimes have good oil pressure and go low after engine warms?
Bad oil pressure sending unit? Try replacing with a mechanical gauge Excessive engine wear? Do a compression test
1984 c10 Chevy there is a square hole in the intake next to the carb what goes there?
Bi-metallic choke coil. pulls the choke open as the engine warms up.
I have a 2002 Chevy Malibu 3.1 engine what causes the transmission to clunk from park to drive or reverse when it warms up. I already replaced the trans but it still does the same?
could be bad mounts on either the tranny or engine?
What causes an oil pressure reading of nearly zero after engine warms up Chevy 350 doesnt leak or burn oil?
A bad oil pump will casue no oil pressure and/or a bad oil filter Answer #2: If the oil pressure is up when the engine is cold but drops after the engine warms a bit, the bearings are worn and the oil pump is not engineered to pump enough volume to keep the pressure up once the bearing tolerances get that worn. Try using a heavier grade oil. If you have been using a 5 W 15 oil, go to a 10 W 30. If you've been using 10 W 30 try a 15 W 40. If that doesn't work try an oil thickener. You might be able to squeeze a little more service out of a failing engine if you have a thicker weight oil. If the oil pressure is up when the oil is cool, it's not the oil pump. pressure sending unit
What causes the Check Oil light to come on and the oil pressure to drop when the engine warms up on a 1993 Pontiac Grand Am?
If the main and/or rod bearings are worn, the oil pressure can't be maintained after the oil warms up and thins out. You might be able to get a little more life out of the engine by switching to a heavier weight engine oil. It is possible also that just the oil pump has worn and can't produce enough pressure at idle. Very often, though, if the pump is worn, so are the bearings, and vice-versa.
