Q: Why is my oil gage stuck at 80 psi whenever my truck is on?

asked by on October 10, 2016

Once I turn my truck on my oil gage automatically shoots straight up to 80 psi. If I turn turn the key forward without starting the vehicle it stays at 0 but once the truck is on it goes straight up to 80 and doesn't move while driving.

My car has 140000 miles.
My car has an automatic transmission.

Oil Pressure Sensor Replacement $88.87 - $220.77 Get a Quote
Electrical components are not working Inspection $79.99 - $89.99 Get a Quote

This is a common sign of a failing oil pressure sensor. This is a small unit in the engine block that reads oil pressure inside the motor and relays this information to the vehicle’s computer as well as the oil pressure gauge. When this is not working it may cause the gauge to display intermittently incorrect readings, sometimes saying 0 pressure and sometimes max (in this case 80 psi) or sometimes it fluctuates erratically. When the engine not running it is normal for it to read 0 since the oil pressure is created by the engine running. To have this corrected, I would recommend having a certified professional from YourMechanic diagnose the odd oil gauge behavior and assist with repair.

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

What others are asking

When I start my car all the warning lights come on,but after a start driving it they all go off.

Hi there. It is normal for all of the lights to come on when the vehicle is first turned on. The vehicle does this as a bulb check for the systems. As long as the lights go off right after...

2012 chevy cruze 1.4 engine was making a ticking/rattling noise for around 3 days while idling and in reverse.

What you are describing sounds like the noise associated with a lack of proper oiling lubrication in the valve train. This may happen for a number of reasons, but could be due to a failing oil pump or plugged oil...

What does the Engine Power is Reduced message mean?

The Engine Power is Reduced message can appear on your driver information center (DIC). The DIC displays this alert when your engine is operating with reduced power. It is safe to drive your vehicle when this alert is displayed, though...

Gauges and Radio flicker when driving

This could be caused by a faulty power steering cooling fan. The Mini's have an electrically controlled fan that will de-activate power assist if the fluid temperature exceeds a programmed standard to prevent damage to the power steering system. These...

Muffler smoke after doing repairs on the car

Most likely, the work you had done and the smoke are unrelated. Black exhaust smoke indicates a rich air fuel mixture and can be caused by problems like a leaking fuel injector or faulty engine sensor. White exhaust smoke indicates...

Transmission fluid is leaking

I would not recommend driving your truck under these conditions to prevent transmission damage. My first recommendation would be to have your transmission system inspected by an automotive service professional to locate the source of the leak. Possible leak sources...

Can someone help me pls?

It sounds like you may have an overheating issue that may very well be related to the fact that there was no coolant in the radiator, however it is also possible that there may be other issues that may have...

Hi, how can I dismantling the oil sump? do you have a picture or service manual of this car? Thanks!

Unfortunately, I will not be able to post a picture of this repair. The service manual recommends pulling the engine to perform the repair. YourMechanic does not do this kind of service on your vehicle. I suggest purchasing a service...

Sounds like a small fan on engine when car off, not radiator fans.

Hi, thanks for writing in. The noise you are hearing is the emission control system performing a system test of the fuel tank vapor system. The system should run the test in less than ten minutes. If the battery cannot...

Related articles

Can You Switch Between Regular and Synthetic Motor Oil?
If you have ever wondered if you can switch between regular and synthetic motor oil, you need to consider what type of oil works best for your engine.
Symptoms of a Bad or Failing Oil Return Hose
Common signs include cracks or bulges on the hose and noticeable oil leaks.
Why Do Cars Have Different Oil Change Intervals?
Car oil change intervals depend on the make, model, and year of the car. The correct type of oil and how the vehicle is used makes a difference too.