An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: oil pressure gauge reads zero
THE SENDING UNIT WILL BE LOCATED DOWN BY THE OIL FILTER. YOU PROBABLY HAVE AN ELECTRIC PRESSURE SENSOR. THERE WILL BE ONE WIRE CONNECTED TO IT. THE OIL PRESSURE IS USUALLY BY THE OIL FILTER AS THIS IS WHERE THE PRESSURE IS GENERATED FROM THE OIL PUMP. THEY CAN BE HARD TO ACCESS ON SOME ENGINES DUE TO LACK OF SPACE. HERE IS ANOTHER TIP. INVEST IN AN OIL PRESSURE SENSOR SOCKET. THEY ARE A SPECIALTY TOOL AND CAN SAVE YOU SOME TIME IF YOU ARE NOT MECHANICALLY INCLINED. GOOD LUCK
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Sound like a posible bad oil pressure sending unit . It is normal for pressure to be above normal just after starting . At a cold idle , the oil viscosity is higher than it would be if it were warm . If the guage is reading really high for longer than normal ( after 1 minute of cold idle ) then I suggest having the sending unit checked .A sevice center can check the sending unit on or off the vehicle as well as checking pressure with an actual guage for more accurate readings .
If the oil light and the gauge is showing low to zero pressure then you need to have the pressure checked by someone with a mechanical gauge to varify the pressure is low. Is the oil level at the full mark? I have seen where the oil pickup tube o ring gets hard over time and cracks which can allow the oil pump to draw in air and cause low oil pressure. If you run the engine with very low oil pressure for any length of time there is a chance that the engine may need to be replaced due to lack of lubrication. The chevrolet dealerships still provide very good service. Hope this helps.
perform a master oil pressure test. this is done by removing the oil pressure sending unit and installing a oil pressure gauge. if the reading on the test gauge is ok, the sending unit needs to be replaced. if the pressure reads low on the test gauge, there may be excessive bearing wear or you may have worn valve guides. good luck!
Sounds like a bad pressure sending unit, or a partially plugged passage going to it. First though, check that the wire connection is good on the unit. Sometimes just adding a good additive such as marvel oil will free it up sufficiently to restore function. With no noises etc, that's the most likely source of your problem. If not, driving as you have been the engine would be junk by now!!! Good luck
i had same problem and its just oil pressure sending unit its above oil filter just check it if you got some loose wire or somthing .........my problem was ;i had oil in conector i clean it and works jyst fine