Q: Vanos gear malfunction

asked by on

Good day

I need information on what could possibly cause a venos gear (exhaust intake one) not to go back to lock position. The gear is brand new (at first I thought it was faulty then went to auto bavaria for replacement but it does the same thing).

The problem is, when the venos does not go back to the lock position, it creates miscommunication to the cam and it loses timing then power on vehicle is lost.

Anyone with information please assist BMW X3 2.5si

My car has 150000 miles.
My car has an automatic transmission.

Hello. The symptoms you describe are commonly associated with a faulty Vanos solenoid or actuator. If the Vanos mechanism is not returning back to it’s proper position it may be possible that it is receiving the signal to due do, perhaps due to a faulty Vanos solenoid or valve. The same could also occur if the camshaft actuator mechanism, the mechanism that adjusts the position of the camshaft and timing of the engine, gets stuck, or encounters a fault. If the actuator mechanism component has recently been replaced then the next things I would look at are the Vanos solenoids. As these sorts of issues can sometimes be difficult to diagnose, if you are unsure, I would recommend having a professional technician, such as one from YourMechanic, visit your location to determine if the Vanos solenoid needs to be replaced.

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

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!
  1. Home
  2. Questions
  3. Vanos gear malfunction

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: Driver side door will not open from the outside

You probably just need a new door handle. The business end of the door handle is made of plastic or cheap metal and eventually it breaks off inside the door. Most door handles can be replaced from outside the car...

Q: Exhaust leak coming from the rear manifold exhaust gasket and I was wondering how do you replace the rear manifold exhaust? 2006 Chrysler Town & Country

Hello - most likely, this is an exhaust leak between the exhaust manifold, and the cross-over pipe. Removing the cross-over pipe will be the required process to replace the leaking gasket if this is the source. i recommend a engine...

Q: Whining sound - possible rear differential problem?

Hello - if your X3 is rear-wheel drive only, yes, it will be a problem with the rear differential. If you have all-wheel drive, the whine could also come from the front differential or the transfer case. If you feel...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...