Q: Loss of engine power. 2007 BMW 335 xDrive

asked by on

Several times already, my car has lost engine power while I was driving at usual speeds. This happened out of the blue as the dashboard hasn't been showing any warning lights on. I went to the dealer and he had the fuel pump replaced the first time. However, this kept occurring. What else might cause this?

Hello. There can be several causes for a vehicle to lose power. It is possible that the crankshaft position sensor or camshaft position sensor have an intermittent problem. There could also be a problem with the mass airflow sensor being dirty or failing. Another possibility is a bad fuel pressure regulator or faulty fuel injectors. In order to have the problem found and repaired, I recommend having an expert technician inspect the engine loss of power firsthand. From there, the correct repairs can be made.

Was this answer helpful?
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. Loss of engine power. 2007 BMW 335 xDrive

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 died and clear, greenish substance on top of engine

The only fluid I know that has a green tint is coolant. You may have leaked out all the coolant or the coolant shorted out the ignition system. Check the coolant level after the engine has cooled down. If it...

Q: Strange rattling/tapping noise at low rpm when accelerating lightly

Hi...the noise can be diagnosed by taking all the belt driven accessories out of the picture by momentarily running the engine without the serpentine belt. If the noise remains, then the search is focused on internal engine parts. If the...

Q: My rear passenger tire blew out earlier today and tore off some wiring under the car. Replaced wiring but no fuel goes to engine?

To determine if the fuel pump is disconnected, turn the key to the "on" (not start) position and listen for the in tank fuel pump momentarily running (the pump should make a brief "whirring" noise and then stop). If you...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...