Q: Oil pressure gauge at zero

asked by on February 19, 2017

We just bought the used vehicle and as soon as we drove it off the lot a ding sound came on and it said check gauges specifically the oil pressure gauge. We noticed every time it would beep the oil pressure gauge would immediately drop to zero and it would go back to normal a few seconds later then it beeps again and drops to zero once more. It keeps doing it so we brought it back to the dealers they won't know what's going on until Tuesday. Did I just spend thousands of dollars for a crap truck that I didn't even get to drive home ?

My car has 133000 miles.
My car has a manual transmission.

Oil Pressure Sensor Replacement $88.87 - $411.13 Get a Quote
Oil Pressure Light is on Inspection $79.99 - $99.99 Get a Quote

Hi There, This may not be as bad as it sounds. The oil pressure may drop like this when a few things could be happening. Either the motor is in fact low on oil, the oil pump could be failing or the oil pressure sending unit is not working properly and may be producing a faulty reading. If the engine is in fact low on oil, you may notice the temperature gauge reading above normal temperatures as a result of the lack of sufficient oil in the motor. I would recommend checking the actual oil level in the motor by using the dipstick. Be sure the oil level reaches the "full" mark. If this registers as "full" then you likely have a faulty oil pressure sending unit. Many vehicles also have a safety feature built into the vehicle’s computer system which will shut the engine down completely or trigger a “safe mode” of some kind which will drastically limit the vehicle’s engine power to avoid further engine damage until the oil pressure problem is corrected. I would recommend having an expert from YourMechanic come to your location to take a look at your vehicle to determine what may be causing your low oil pressure problem.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

What can cause a rattle in the front end while driving straight, that goes away when you turn any degree?

Depending on the condition of the brake pads, they may also cause a bit of rattling if they are in need of being replaced. I would suggest having an expert from YourMechanic come to your location to diagnose and inspect...

How much does it roughly cost to fix the p0304 code on a 2000 gmc Jimmy

Hi there. The cost of the repair would depend on the problem that is causing the misfire on the #4 cylinder. It can be as simple as needing a new spark plug to as expensive as an engine rebuild if...

Need to locate the oil filter on a 2001 Oldsmobile Silhouette

Hi there. Although this video is for an Alero, the motor on your Silhouette is identical. You can watch the video to see where the filter is located and how to remove.

AC stops working, blows warm air

Hello. Your A/C system has multiple components and sensors. It is possible that the high pressure switch is faulty. It is also possible that the blend doors for the hot and cold air are sticking and unable to open and/or...

Power steering quit working

Sounds like you might have lost your serpentine belt. On most older cars, these were several belts that ran the different engine accessories. On your car, there is only one belt, it is called a serpentine belt, that runs all...

How many air bags does my vehicle have?

air bags are very important safety features that can limit injuries during an accident, and potentially save your life. Your car has six air bags: two front air bags, in front of the driver and front passenger seat; two side...

How does the tire pressure monitoring system work?

Your car’s tire pressure monitoring system (TPMS) is designed to help you keep an eye on the tire pressure. If the system notices a drop in pressure in a tire below a specific threshold, it will turn on the Low...

How can I make my suspension last as long as possible?

There are many ways to be able to make your vehicle's suspension system last longer than average, depending on where you live and its climate. If you're living in the city versus the suburbs, or if you do a lot...

Related articles

2012 GMC Acadia vs. 2012 Dodge Journey: Which One Should I Buy?
The GMC Acadia is classed as a midsize SUV, which is able to seat between six and seven passengers comfortably. The 2012 Acadia offers three rows of seating, so passengers will feel the roominess that is typical in a true...
The Best Used Cars to Buy If You're a Dog Trainer
If If you are a dog trainer, you expect a lot from your vehicle. You want a ride that is safe, roomy, and of course, dog friendly, since your training operation will often mean that you need to transport the...
The Best Used Cars to Buy If You're Towing a Boat
If If you’re towing a boat, the vehicle that you buy is largely going to depend on the size and weight of your boat plus trailer. Most cars, realistically, aren’t cut out for the job. We recommend a pickup truck...