Skip the auto shop - Our mechanics make house calls

Q: Oil pressure at 0

asked by on

The oil pressure is reading 0. It does not need oil.

A: Oil pressure in a vehicle can still be at z...

Oil pressure in a vehicle can still be at zero even if it is full of oil. The oil pressure is developed by the oil pump located inside the engine. If the pump veins cannot develop enough pressure to lubricate the engine, internal engine damage can occur. Oil pumps usually go bad over time and start by developing pressure when the engine is cold and as the engine gets hot, the pressure starts to drop. Eventually, it will not develop anymore pressure. The other possibility is a bad oil pressure sending unit. This is a device that actually sends the signal to the oil pressure gauge. There is no way to test the unit, so the normal diagnosis is removing the unit and installing a gauge in its place to verify the engine is actually developing correct pressure. This rules out the pump and only leaves the sending unit. Consider using the services of YourMechanic to help you diagnose your oil pressure issue and make the necessary repairs. I suggest that you avoid driving until this is checked. Low oil pressure will very quickly damage your engine.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Voltage Regulator

The voltage regulator on your car is integral to the alternator. If you have diagnosed your charging or electrical failure as due just to the voltage regulator, you should request GM part number 15926088. See also GM TSB (technical service...

Q: Seal leaking

A rear main seal leaking on this engine is very common. The transmission must be removed to change it. I have seen this also occur from a failing PCV valve. It is it not functioning too much crankcase pressure can...

Q: I had my oil pan gasket replaced and car is still leaking oil

Hello, thank you for writing in. An oil leak like this can be tricky. First know that the oil pan, by design, is the lowest component in the oil system, so that gravity will collect the oil in the pan...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...