My oil pressure light recently came on so I changed the oil and filter. That didnt solve the problem so we changed the oil pressure sensor. That didnt work either. We changed the oil again and found we found a jello like substance in the oil filer. There are no metal shards in the oil. Please HELP!
Hi: you dont specify details of your car, make and year, got ECM or not, if yes hook up a scanner in the port and check for active codes. if you dont have a scanner you can do this.
1.- remove oil pressure sensor and install a mechanical gauge 0-120 psi long enough so you can check from the driver seat.
2.- Start engine and check the oil pressure. the pressure must be between 35- to 70 psi with oil cold, when it gets hot pressure drops from 25 - 50 psi at idle. At 2500 rpms the pressure goes a litltle higher. if pressure drops less than that values you got problem with your engine, then its time to get an experienced mechanic.
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A leaking filter and oil pressure switch would cause the lack of oil pressure. Does the oil light work and does it go out now you have changed these parts. It only needs approx 8 psi to put the light out, the engine should run at approx 40 psi at 2000 rpm.
CHECK OIL PRESSURE SHOULD BE 20 - 45 PSI @1500 RPM OR 40 - 70 PSI @1500 WHEN ENGINE RUN ROUGH OIL LIGHT COMES ON YOUR OIL LEVEL LOW OR OIL TOO CONTAMINATED.YOU NEED TO CHANGE OIL FILTER AND OIL.LOOK AT THE COLOR OF THE ENGINE OIL,LOOK MILKY COOLANT GETTING INTO OIL.SMELL OIL IF SMELL LIKE GAS FUEL INJECTORS DIRTY CAUSING FUEL TO LEAK DOWN INTAKE WHEN ENGINE OFF.
Do not assume that the low oil pressure warning is a false one or that you only have a faulty oil pressure sensor. Your engine may in fact be running with low oil pressure once the oil heats up and thins out. 8-10 miles of running is enough to get the oil hot. It is significant that you only get the low oil pressure warning once the engine oil is warmed up.
If the oil pressure in the engine is low, engine lubrication will be impaired and the engine can be badly damaged so you need to run an engine oil pressure check.
1. How long has it been since you have changed the oil in the engine? If it has not been changed in the past 6 months then change it and change the oil filter at the same time. You must only use the oil specified by VW for that particular engine.
2. When new oil is heated it thins. If it is old and contaminated it will be even thinner when warm. You will get less oil pressure when the oil is thin and hot and more oil pressure when it is thick and cold. Fresh new oil is a little thicker as it has not been diluted with petrol and other contaminants. Oil pressure also varies with engine speed (RPM). At idle or low engine RPM the oil pressure is lower.
3. OIL PRESSURE CHECK After the oil is changed the car needs to be run to check if the oil pressure warning still appears. (I suspect that it probably will). If it does appear then an independent oil pressure gauge needs to be connected up to the lubrication system in the car to check the engine oil pressure. This is best done when the engine oil is hot because this is when you are getting the low pressure warning. Any competent mechanic will be able to do this. ( The useless ones will not). The oil pressure can then be properly checked on the gauge at various engine RPM. If there is a low oil pressure reading from the gauge then there could be a problem with the oil pump, the oil pick up or the oil pressure relief valve in the engine.
4. You mentioned that you see the oil pressure warning disappears once you accelerate. I suggest this is only occurring because with an increase in engine speed (higher RPM) the oil pump speed is increasing and the low oil pressure problem is being overcome temporarily. However as soon as the engine RPM drops the oil warning will appear again which means the engine is running with below minimum oil pressure at that RPM.
Even when you get no warning, the oil pressure in the engine could still be running significantly below the optimum level.
5. It is possible that the oil pressure is fine and that the problem is an electrical gremlin as these cars suffer from a variety of electrical faults. However from what you have described I think there is a problem with low oil pressure in the engine and until it is properly checked it is unwise to assume that you are just getting false oil pressure warnings.
If you haven't done so recently, change the oil and filter, if problem is still there, change the oil sending unit, if that don't cure it, then there is an oil pump problem. Doing this is easier and cheaper than having to drop the oil pan if you don't need to.
This sounds normal to me! The engine will read that rpm when accerlerating lightly. It is the stall of the torque convertor. The oil pressure will always be higher when the rpm's are higher, or when the oil is thicker - cold.
Virbration? That is a different story. Oil won't cause that.