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

asked by on July 16, 2016

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

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

Check Engine Light is on Inspection $94.99 - $114.99 Get a Quote

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.

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 Is Engine Displacement?
Engine displacement is the total volume of an engine's cylinders added together. To figure out the engine’s total volume displacement, you would need to know the bore, which is the diameter of each cylinder, the stroke, which is the distance...
Fuse box wires burned
Hi. The issue you have experienced demands a mechanic's attention. The fuse box is the power unit to most of your main power sources in your vehicle. The burned wires are caused by overheating to a point where the wires...
won't crank
There is a technical bulletin that could correct the issue you are having. The bulletin is 06-9-3 (http://www.oldrice.com/images/tsb06-19-08.pdf) and covers water leaking into the left side of the vehicle causing corroded wire terminals connections. The bulletin shows many pictures that...
Engine is misfiring - 2001 Nissan Maxima
There are some "interrelationships" between "parts" of the exhaust system and engine misfiring. First of all, if the engine is actively misfiring, this will destroy the catalytic converter which is often the most expensive exhaust system component. Of course, that...
Rough Idle
This may also be caused by other things such as low fuel pressure or leaking or intermittently working fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement). When the fuel pressure is low, it will fail to bring the correct amount of fuel pressure to the...
Why won't my car move in reverse. 2004 Honda Accord
Hello. From what you are explaining this is the first sign of a serious transmission failure. This is a common issue on this vehicle. The Honda Accord has a history of transmission failures, and reverse is usually the first gear...
My clutch pedal won't come back up fully. The main reservoir is full, even over the MAX.
There are typically a few different possibilities for why a clutch pedal will stay on the floor (https://www.yourmechanic.com/services/clutch-pedal-goes-all-the-way-to-the-floor-inspection). It could be a failed clutch master cylinder, slave cylinder, failed fluid line, or the clutch has failed. If there doesn't appear...
I have a Lexus ES300 2003, It makes a very loud noise when I drive it.
The exhaust may have a bad flex pipe and leaking exhaust and should have the system inspected.

Related articles

P0054 OBD-II Trouble Code: HO2S Heater Resistance (Bank 1, Sensor 2)
P0054 code definition HO2S Heater Resistance (Bank 1 Sensor 2) What the P0054 code means This code means the Heated Oxygen Sensor...
P2401 OBD-II Trouble Code: EVAP Leak Detection Pump Control Circuit Low
P2401 P2401 trouble code definition P2401 is a OBD2 generic trouble code indicating a fault within the EVAP leak detection circuit. This code may be seen with other EVAP system codes. What the P2401 code means The P2401 trouble code...
P0903 OBD-II Trouble Code: Clutch Actuator Circuit Malfunction
P0903 P0903 OBD-II Trouble Code: Clutch Actuator Circuit Malfunction Diagnostic Trouble Code (DTC): P0903 P0903 code definition P0903 is the OBD-II code for Clutch Actuator Circuit Malfunction. Other codes in the P0900 series may accompany this fault. What the P0903...