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Why when truck warms up oil pressure goes down and to zero at idle but good pressure when cold?
Wiki User
∙ 11y ago
If you have the correct weight oil in the engine, it sounds like the engine may be worn. If you haven't checked the oil pressure with a manual gauge (vs the dash gauge) that is a good place to start to verify that it is not a gauge/sensor problem.
Wiki User
∙ 11y ago
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Why does my oil pressure gauge read low?
You will need to remove your oil pressure sending unit and install a mechanical gauge to get a true reading. You need to start out cold and write down the pressure reading and also once it warms up to operating temperature. If the pressure gauge is not the same as the mechanical one you have a bad pressure switch.
Why does putting a soda can in the refrigerator cool the soda down?
This is because the fridge is cold, and this cold makes the outside of the can cold. Objects get col from the outside, in. Unlike heat, which warms objects from the inside, out,
Why is your water pressure going down?
Hot or cold?
What cause your heater to go from hot to cold when the car warms up?
because it needs to cool down if it gets too hot
How do the body's systems maintain control of temperature?
If you get too hot then you sweat which cools you down, if you get too cold then you shiver which warms you up.
Is high pressure warm front or cold front?
warm front is low pressure , cold front high pressure . because it pushes down on the surface (because cold air sinks) it makes high pressure .
Why would truck warm up blow hot air stop at light and blows cold air 2000 dodge 1500 5.9L temp goes up oil pressure goes down?
bob is the best
Why does the oil level go down on my Ford Focus 2003 1.6?
When the oil is cold, it will register a high pressure. As it warms, it will go down. Check your oil level with the dipstick to be sure oil is to the full mark. Also, if oil is old, and thin, change it. It has lost its viscosity. The needle should stay in the "safe" zone, even at idle.
What should the oil pressure be warm at idol you have a 1985 woody when you start it cold goes up to about 55 psi as it warms it drops clear down to about 10 psi?
Here is the address to the International Full-Size Jeep Association website: http://www.ifsja.org/index.shtml Plenty of info, know how, etc.
What causes bronco to go in gear when its cold but when it warms up it wont move until it cools back down?
front pump or clutches more than likely its the clutches
2000 Jeep Cherokee with 93K has high oil pressure reading Starts at 80psi and after driving a little goes down to 60 Any recommendations?
Nothing is wrong. Drive it. It could be the oil pressure sensor starting to go bad- mine did the same thing This is normal. Oil is thicker when it is cold. As it warms up, it becomes more fluid and the oil pressure tends to drop. If it oil pressure drops when you come to a stop and increases as you accelerate, everything should be ok.
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.
