Q: Either the oil pump or oil sending unit is going bad. I don't know which one.

asked by on

Since I bought my truck it has had low oil pressure. Now even when i'm at 3,000 rpm it will just zero out. I DO have oil in the truck but with the pressure at zero most of the time my lifters are really getting loud. I'm not sure which it is so I can fix it.

My car has 157000 miles.
My car has an automatic transmission.

Hello, If you are able to ear noticeable lifter noise or other valve train noise, it is quite likely your oil pressure gauge may be correct and that your oil pump may be failing or you are just low on oil. I would recommend changing the oil to start with and making sure it has the proper amount of oil in it giving you a good starting point. From there you can listen for valve train noise. It may be also be just as prudent to install a new oil pressure switch regardless as they are fairly inexpensive.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Either the oil pump or oil sending unit is going bad. I don't know which one.

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: Jerking motion

It sounds like you may have a severe misfire. Usually a Check Engine Light will come on indicating that a diagnostic trouble code is stored. Reading the codes will allow a technician to focus on the system that is causing...

Q: fuel injection service

Hi Mike. Thanks for submitting your question. Generally speaking the pricing you offered is within industry standard. However, if the check engine light returned, it's possible and quite likely that the original code may not have been resolved. I'm actually...

Q: Driver has to gas engine to prevent shutting down

Hello there, thank you for asking about your 1993 Isuzu Pickup. If you're getting 26 mpg in a 23 year old truck, that's as good as it gets. As far as the stalling out, there are many potential causes. Since...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...