☰
GET A QUOTE

Q: My car keeps blowing oil sending units

asked by on November 04, 2016

My car keeps blowing oil sending units we have had four replaced by a certified mechanic we just replaced the water pump because antifreeze was mixing with the oil the car runs great no problems it does not run hot or anything it just keeps blowing the oil sending units

My car has 130000 miles.
My car has an automatic transmission.

Recommended Services

Car is overheating Inspection $94.99 - $114.99 Get a Quote
Or For Any Other Auto Repairs Get a Quote

Hi there - I suspect you have a blown head gasket. Having coolant in the oil is a classic blown head gasket symptom, and having very high oil pressure means combustion pressure is being leaked into the oil passages. This pressurizes the oil pressure sending unit upwards of 150 to 200 psi (as opposed to being pressurized from the oil pump at 5 to 100 psi), overwhelming the oil pressure sending unit. I would recommend having your vehicle inspected by a mobile, professional mechanic, such as one from YourMechanic, to confirm this diagnosis and to address your pressure problem.

Chevrolet
Malibu
2006
L4-2.2L
oil pressure
head gaskets
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

Key not going into ignition
Hi, if the wiring is damaged then the computer won't be able to communicate with the lock cylinder correctly and cause it to lock up. You should have a certified technician, such as one from YourMechanic, inspect the wiring from...
Read more
Check engine light on 1998 Audi A4
Any good mechanic can check them out. Here's the problem that you've got though--when there's a linking error, either the nanoport isn't working right because one of the pins is bent or there's wiring short somewhere in the computer system...
Read more
Drove through a puddle of water and now the car won't start
In order to create a safe driving state and prevent damage to the automatic transmission, the transmission control module (TCM) will force the vehicle into "limp mode". In this state, all solenoids and regulating valves are de-energized and the last...
Read more
Car makes a single loud pop when first backing up or pulling foward. Sounds like s hammer.
You should have the lower control arm ball joints checked (https://www.yourmechanic.com/article/how-to-check-suspension-ball-joints-by-ed-ruelas) to see if they are loose. Also, check the sway bar link arms and sway bar bushings for wear or damage. An inspection of your suspension system (https://www.yourmechanic.com/services/brakes-steering-and-suspension-inspection) by...
Read more
Can i change a door barrel lock on a rover streetwise as key fob shell is broken
You don't say what year or model your Rover is, so it's difficult for me to be very helpful. On some vehicles, there is a separate emergency key that pops out of the key fob and can be used to...
Read more
Above you give information for correction on the fuel cap, but where is the "next" button?
Hi there. The message is on for the fuel system is not able to build up pressure. Check the fuel cap seal and see if the seal is cracked or broken. A broken seal on the fuel cap will cause...
Read more
Engine knock. Replace bearings when i replace oil pump?
Hi there. It is always best to stick with OEM sizing; unless you're going to completely rebuild the engine, have the crank turned and new pistons / rods installed. If you're simply installing a new oil pump, replace all bearings;...
Read more
Backfiring under hood 2008 Chrysler 300
Hello it sounds like perhaps one or more plug wires (https://www.yourmechanic.com/article/how-often-do-spark-plug-wires-need-to-be-changed) were not re-attached in the correct order. This is especially easy to do on an engine like yours that still has plug wires routed all over the engine. The...
Read more
What is the cost to replace an 02 sensor in a 2003 Hyundai Elantra
Hello, thank you for writing in. If you are going to have someone replace the oxygen sensor, you must take into consideration the price of the part and the cost of labor. For a technician from YourMechanic to replace the...
Read more

Related articles

The Best Used Cars to Buy If You Have Kids
Once Once you have kids, the kind of car you have becomes very important. Suddenly, the amount of space, entertainment features, reliability, safety, and easy to clean interior become the top priorities. Here’s a list of vehicles meant to satisfy...
Read more
The Best Used Cars to Buy If You Have 3 or More Kids
If If you have three or more kids, you could probably get by with a mid-size sedan if all you want to do is take them from Point A to Point B. Realistically, though, having kids means music lessons, athletics,...
Read more
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...
Read more

Browse other content

Estimates
Services
Cities
Maintenance