Skip the auto shop - Our mechanics make house calls

Q: oil pressure drops,replaced oil pump, ran for a 2 months, and again pressure drops after afew minutes.

asked by on

did not use o ring, could this be the problem. engine light on

My car has 125000 miles.
My car has an automatic transmission.

Engine oil pressure may go lower after an engine gets warm. You should have the oil pressure checked with a gauge tester to verify the oil pressure is within specification. If it falls to below specification, then you should replace the pump using a high pressure pump and not an aftermarket high volume pump. While you are doing the pump check a couple main crankshaft bearings to make sure they are not damaged. If you want to have this diagnosed, the Engine Light can be scanned for codes to help pinpoint where the issue is.

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!
  • Home
  • Questions
  • oil pressure drops,replaced oil pump, ran for a 2 months, and again pressure drops after afew minutes.

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: My truck has a fuel smell in the exhaust and a horrible idle

I would suggest checking the idle air control valve to be sure it has a proper connection and is not dirty. As you may know, this reads the air intake into the fuel injection system as it is mixed with...

Q: Getting Red Lighting Bolt Warning Light and Check Engine Light

Hi there. Assuming the Check Engine Light and red lightning bolt were on before your vehicle experienced the no start condition. This would indicate a malfunction in the electronic throttle control system. The computer has recognized the fault and stored...

Q: Battery or Alternator

This can be caused by a variety of things. The first couple of things you may need to look into are the possibility of a vacuum leak, or the fuel injection system. In order for your car's engine...

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...
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...
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.