Skip the auto shop - Our mechanics make house calls

Q: Loss of oil pressure

asked by on

After the car warms up and I accelerate the oil pressure tach says it drops from 192 psi to 3 at its lowest but usually about 30 then rise as I let off or hold it at the same idle. The oil light will come on and ding then go away. There is plenty of oil. And at an idle it reads 192 and does not move. Could it be a sending unit or sensor? Thank you for your help

My car has 16 miles.
My car has an automatic transmission.

A: The oil sender may be bad causing the errat...

The oil sender may be bad causing the erratic readings. I would, however, suggest having the oil pressure tested with a gauge before replacing the sending unit for the oil pressure. If it tests okay and the pressures are normal, then it is the oil sending unit that needs to be replaced. If you would like to have the oil pressure inspected, a technician from YourMechanic can come to your car’s location to determine what fixes may be necessary.

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: Car stalling in the summer

Hi. Your vehicle may be experiencing an overheating issue. Also the stalling can be due to a drop in pressure in your intake system. If your Check Engine Light is illuminated, a mechanic sent by YourMechanic can scan the car's...

Q: Oil pressure gauge

This usually means one of two things are happening. Either the motor is in fact low on oil or the oil pressure sending unit is not working properly and may be producing a faulty reading. I would recommend first, to...

Q: My car only starts after jumping it and then dies a short time later

Although it's difficult to diagnose an electrical issue without inspecting your 2002 Buick Regal personally, all three issues you've listed may be the primary source of your starting issues. However, if the battery does not hold a charge, it's most...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.