Skip the auto shop - Our mechanics make house calls

Q: Intermittent Oil Pressure Light shows still, please help!

asked by on

My car has been in and out of the shop for over a month, the mechanic who is a qualified Herman mechanic and always worked on my cars is even frustrated with it, the sensors were coming up as faulty when they scanned it so they changed the sensors, we've done an oil change, replaced the filter with an Audi one, cleaned pipes and checked for blockages, checked for leaks, checked the oil pump, the oil pressure has improved from good to great and has been tested. However after a few days of driving and only when the car goes above 4000 rpm then the light comes on and once you turn off and restart the car it won't come back on until the car is over 4000rpm. It's very odd. My mechanic has borrowed and driven my car for a day and tested the oil pressure and it doesn't show any issue. I'm out of ideas!

My car has 148140 miles.
My car has an automatic transmission.

A: Hi there. Check the oil pressure with the e...

Hi there. Check the oil pressure with the engine at 4000 RPM’s. If the oil pressure is normal and high, then the oil pressure sensor is failing due to engine harmonic vibrations.

If the oil pressure has dropped at 4000 RPM, then the oil galleries in the top of the block could be sludged up. Take one quart of ATF (automatic transmission fluid) and put it in the engine. Run the engine for 15 minutes. Drain out the oil and change the filter and put in new oil. The ATF will clean up all of the oil galleries and clean up the contaminants in the engine. If you need further assistance diagnosing your Oil Light issue, then seek out a professional, such as one from YourMechanic, to help you with your vehicle.

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: My car is a pologti. It's having low pulling in a direction mostly running in flat road. How can I make it okay?

Hi there. Check the tires on the vehicle and see what their conditions are. If the tires are feathered or scrubbed on the inside or outside, then your vehicle has an alignment issue. If your tires are worn, I recommend...

Q: Why would Oil Pressure Light come on while braking?

Hello. I don't know how often you check your oil level, but I would certainly check it now. Turbo-charged engines consume a bit more oil during an oil change interval than non-turbo engines, and it's possible your oil level is...

Q: High idling, check engine light on

The Check Engine Light being on indicates there is a problem and a code will have been set. Have the light checked for codes and then get a professional to thoroughly diagnose the Check Engine Light to see what fixes...

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 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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.