Skip the auto shop - Our mechanics make house calls

Q: I have changed my crankcase oil separator on my BMW e90 and now it's jerking at 1500rpm.

asked by on

I have changed my crankcase oil separator on my BMW e90 and now it's jerking at 1500rpm Have I missed something

If you left any connectors loose or broke and seals in the process of the repair, a bad vacuum leak may cause your concerns. A technician equipped with a professional scanner may be able to hook up to the car and read the data offered to see if there are any problems as well as pick up any fault codes that may have come up. Consider hiring an experienced technician like one from YourMechanic who can come out and take a closer look at the hesitation and offer a more personal diagnosis.

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!
  • Home
  • Questions
  • I have changed my crankcase oil separator on my BMW e90 and now it's jerking at 1500rpm.

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: Hesitate on hard acceleration - 2002 Volkswagen Beetle

Hi there. Check for exhaust restriction and related to that condition of the oxygen sensors (bad sensors can cause catalytic converter plugging). Another possibility is fuel starvation so the output of the fuel pump has to be tested (pressure...

Q: The engine steams well but does not accelerate when pedalled

You will need to have the dealer register the battery to the computer or the vehicle may not work correct and not charge the battery as it should. The new battery will need to be registered to your VIN in...

Q: I am going to replace my fuel pump and I need advice

Diagnosing a hesitant engine will take some testing and the process of elimination. Being 10 years old, the vehicle is likely due for some work, and you should keep any recent repairs in mind while looking into this. Considering the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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.