Skip the auto shop - Our mechanics make house calls

Q: Engine oil light flickers when I make a stop

asked by on

I'm having trouble with the engine oil light flashing on and off when I stop at a red light and then it stops flashing when I start driving again. I checked the oil and fluids and all seem okay. What is causing this?

The light is flickering on and off due to the oil pressure being low below 4 psi at idle or the oil pressure sensor is not working correctly. The only way to know for sure is to do an oil pressure test. The engine should have at least 4 psi at idle and above 25 psi at 3000 RPMs. If the oil pressure is below 4 psi at idle, then replace the oil sending unit. If the pressure is at zero at idle, then you will need the oil pump and screen replaced or at the very least checked. Also, check the engine for any bearing damage when the oil pump is replaced. A certified technician will be able to perform these tests and diagnose why this warning light appears for you.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: The airbag light is on in my car !

If your airbag light is on then there is a problem in the system and the airbag is deactivated. This means it will not work in the event of an accident. Any GM dealer can diagnose the problem for you....

Q: Blown Head gasket or just overfilled transmission fluid?

Hi There, Transmission fluid should not have any impact on any smoke coming out of the exhaust. Chances are, if you drove the vehicle without the serpentine belt for any distance, the motor would have overheated to a critical point...

Q: How can I clean my car AC?

Depending on the environment in which your car is parked, there could be a variety of problems with debris in the AC system. Mice, Squirrels, and other critters sometimes find the vent openings and pack food and nesting material in...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.