Skip the auto shop - Our mechanics make house calls

Q: My oil light keep combing on

asked by on

When the car is cold the light will not come when car get hot the light come on
My car has an automatic transmission.

The oil pressure light on indicates a drop in oil pressure. A cold engine with cold oil will generally have higher oil pressure because the cold oil is thicker. Once the oil warms up, it can get thinner and cause a drop in oil pressure.

This is generally normal with any engine, but if the pressure is low enough to cause the oil light to come on, an inspection of the oil pressure light by a certified technician, like one from YourMechanic, should be performed. Causes can range from simply a bad oil pressure switch to a weak/worn oil pump.

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: Loose timing chain

If you drove your engine until it shut down from overheating, then you may have done engine internal damage to the cylinder heads and head gaskets. I am not saying the engine is shot, but you may have major engine...

Q: After starting SUV, 4 indicator lights come on

There are several reasons that this could happen. A system voltage dip or spike can cause all of these systems to illuminate their indicators or a fault that compromises the drivability of the engine such a mass airflow or oxygen...

Q: The oil pressure gauge triggers the red oil lamp when idling

This may be related to low oil in the motor or potentially a faulty oil pressure sensor. I would recommend checking the oil via the dipstick first to be sure the proper amount of oil is in the motor to...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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 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...