Q: Valvetronic operation on N42 engine.

asked by on

Hello,

I have a very big engine failure which I can not reveal. It is the engine N42, 105kw, petrol in 2002. The problem happens at startup, when the included sensor Valvetronic, the third cam. When you turn off the sensor, the car without trouble starts. I checked all: VANOS, the chain is a new and set up with the professional tool, a new sensor of the camshaft, spark plugs and ignition coils are ok.

Connect the car on diagnostics and error checking, there were no mistakes on the engine.

When the sensor is included Valvetronic engine grinds as there is no compression, as the following link:

https://www.youtube.com/watch?v=Hx3KM4_a634

Any help is good to come, Best regards
My car has a manual transmission.

The valvetronic motor is stuck or not functioning properly and causing the engine to not start up. I recommend replacing the valvetronic motor. The motor is designed to cycle itself when turning on the ignition, so it is good to let the vehicle sit for about 10 seconds before starting the engine. If you need further assistance with your valvetronic motor not working, then seek out a professional, such as one from Your Mechanic, to help you.

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. Valvetronic operation on N42 engine.

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: Q: Windows won't close

Looking at the wiring diagram for your vehicle, I don't see any part of the circuit that would affect both rear windows, without also affecting the front. Because of this, my guess is that you have two failed power window...

Q: Q: Instrument cluster not working.

Hi. One of the instrument cluster power supplies comes directly from the ignition switch, which is also bolted to the ignition lock cylinder housing. It is possible that either the ignition switch is faulty or that the wiring on the...

Q: Oil leak behind oil filter

There should be an oil pressure sensor located near the filter housing. Check to see if there is a leak at the sensor. At idle, there should be about 15PSI of pressure and about 50-60PSI at around 3,000 RPM's. There...

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 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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.