Problems You Might Have with Your CAT C15 ACERT Diesel Engine Oil Pump

Lubrication is key to keeping your engine functioning properly. If your diesel engine isn't properly lubricated, components could begin to wear more quickly and even seize up, costing you more money. The oil pump is critical to keeping your engine lubricated.

If you have a failing oil pump on your CAT C15 ACERT, there are a few things about your engine performance that you might notice. Even if your oil pump is working correctly, you shouldn't ignore these symptoms. They might be an indication of another problem in your diesel engine. 

We're taking you through the symptoms you need to know if your CAT C15 ACERT diesel engine oil pump is failing. 

You can also check out our video for more info:



Need a new oil pump for your CAT C15 ACERT? Our ASE Certified Techs can get you the right diesel engine replacement parts!

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Running a C15? Take a look at our article on problems with your C15 oil pump


What Symptoms Indicate a Failing C15 ACERT Oil Pump?


c15 acert oil pump failure symptoms | Highway & Heavy Parts


So just what are the symptoms that you should watch out for? If you have a bad oil pump on your C15 ACERT, you might notice:

  • Low Oil Pressure
  • Higher Operating Temperatures
  • Unusual Noises

As we mentioned earlier, these symptoms aren't exclusive to a failing oil pump. They could also indicate another problem in your diesel engine. So, even if your oil pump is operating perfectly, you should still have your engine looked at if you notice any of these symptoms. 


What Causes a Failing Oil Pump?

There are several things that can cause the oil pump on your C15 ACERT to fail. 


c15 acert oil pump failure contaminants | Highway & Heavy Parts


For instance, contaminants could have been introduced to the system during install. It's vital that all components are kept clean during the installation process to avoid failing in your oil pump, or even other components down the line. 

Want to know more? Check out our article on cleanliness during diesel engine repairs


c15 acert oil pump failure improper install | Highway & Heavy Parts


Similarly, improper install can stress the pump housing. This can lead to cracking, the gear shaft working its way loose, breaking the crankshaft gear, or an oil pump that isn't correctly shimmed, therefore not giving the gears appropriate backlash. 

Want a closer look at possible problems with oil pumps? Read our oil pump failure analysis

If you replace your oil pump, there's a chance that you might still notice low oil pressure. If this is the case, there are a few things that might be the problem: faulty oil pressure gauge, plugged oil filter, worn bearings, contaminated oil, not enough oil, improper install, or engine age. If you continue to have oil pressure problems following the installation of a new oil pump, one of those issues might be your culprit. Read our post, Low Oil Pressure: I Changed My Oil Pump, Now What? to learn more.


If you have a failing oil pump, Highway & Heavy Parts can help! We have a selection of oil pumps for your CAT C15 ACERT and we can work with you to make sure you're getting the right part for your engine. Be sure to have your engine serial number ready to help make the ordering process even easier!

Need replacement parts for your diesel engine? We have ASE Certified Technicians on staff ready to help you out! Call us at 844-304-7688, or request a quote online!