Skip the auto shop - Our mechanics make house calls

Q: My oil and engine light are flickering on and off after about 15 minutes of driving

asked by on

My car`s oil and engine light has been flickering on and off after driving for about 15 minutes, and one time the engine was smoking, i just need a diagnosis of whats going so i can get it fixed.

My car has 153000 miles.
My car has an automatic transmission.

A: The oil light is coming on after it warms u...

The oil light is coming on after it warms up due to once the oil is warmed up it thins out and oil will leak past worn parts like the main crankshaft bearings and crankshaft rod bearings. Your oil pump can also be weak and not producing enough pressure. The crankshaft bearings are most common and in order to check them you would need to remove the oil pan and remove one main bearing cap and one rod bearing cap to see if they are worn out. You will notice an engine knock when the engine is running if the bearings are worn also. If the oil pressure is suspect then the oil pressure should be checked before the removal of oil pan. The oil pressure should be checked when the engine is cold and then see how low it goes as the engine warms up.

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: coolant leaking from injector 3

This could be from a couple of problems that may be unrelated. The first question is from where, specifically, the coolant is leaking. Depending on where the leak is coming from and if there are any other...

Q: Oil light goes off and on.

This light will usually come on when one of two things are happening. Either the motor is in fact low on oil or the oil pressure sending unit is not working properly and may be producing a faulty reading. I...

Q: Takes gears but it's not moving

Hey there. This is a sure sign that the clutch disc is worn out or came apart. The clutch disc is sandwiched between the clutch pressure plate and the engine flywheel. When you press in on the clutch pedal this...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...