What is Valvetronic servo motor?

In its simplest form, the Valvetronic system controls valve lift by mechanical means, and in conjunction with BMW’s VANOS variable valve timing system, intake valve lift, intake valve duration, and intake valve timing are infinitely adjustable.

What does Valvetronic eccentric shaft sensor do?

The eccentric shaft sensor is responsible for controlling valvetronic timing, and has been known to be a common issue. If your car has been experiencing difficult starts, low fuel economy, and overall lack of engine power and performance, this component may be to blame.

Where is the eccentric shaft sensor?

The eccentric shaft sensor is mounted to the cylinder head beneath the valve cover. The top of the sensor protrudes up through valve cover and is sealed by a rubber gasket. The eccentric shaft sensor tends to wick engine oil up through electrical connector, creating an oil leak at top front of valve cover.

What causes Valvetronic failure?

Common causes and symptoms: Wear and tear, as well as added mileage, can cause the valvetronic eccentric shaft to experience wear, causing the shaft to bind. In this case, the increased resistance in the shaft is what triggers the fault code.

How do I reset my BMW Valvetronic?

Insert the valvetronic motor and connect its 2 pin plug. Then switch the ignition onto position 2 and within a space of 15 seconds, depress the accelerator pedal down to full throttle 10 times and you will hear the valvetronic motor program itself back to factory spec.

Can you unplug eccentric shaft sensor?

By disconnecting the eccentric shaft sensor, the DME will put the valvetronic into emergency running mode. The valves will go to full lift via the DME activating the valvetronic motor and the accelerator will work off the throttle body. In layman’s terms it will run like a conventional non valvetronic engine.

Can you drive without valvetronic?

when the dme sees valvetronic not working right it disables it with the valves at maximum lift. the car continues to drive fine with disabled valvetronic.

How much does it cost to fix a valvetronic motor?

Repair cost is around $3,400.

What does a BMW eccentric shaft do?

This gives faster and more precise throttle response. What controls valve lift is an electric motor and an eccentric shaft that adjusts the valve lift. The eccentric shaft sensor measures the rotation of the eccentric shaft that translates into how much valve lift there is. The sensor itself is a HALL effect sensor.

Can valvetronic cause misfire?

For a warm engine, the threshold for misfires is by Lambda around 1.4 .. 1.5. So – unless the wear of the Valvetronic is not so significant, that the air fulfillment of the cylinder is for 50 .. 60% less than optimal – Valvetronic IS NOT the cause of misfire!

What does BMW Valvetronic motor do?

The Valvetronic system is a BMW variable valve lift system which, in combination with variable valve timing, allows infinite adjustment of the intake valve timing and duration. The system claims to improve fuel economy and emissions, and negates the need for a throttle body in regular use.

What is BMW VVTI?

Variable valve timing is a regular feature of modern motors. Before the invention of this technology, valve timing was restricted to the type of camshaft used. In short, VVT controls the timing of the intake and exhaust valves opening and closing. Valve timing impacts performance, emissions, and fuel economy.

Does the N55 have Valvetronic?

Design. The main differences between the N55 and its N54 predecessor are the use of a single turbocharger, the addition of Valvetronic and the type of fuel injectors.

How do you read a BMW code?

  1. Standalone diagnostic device. Using a standalone diagnostic device to read out the error memory is easy and fast.
  2. Laptop with software and OBD cables. You can also read a BMW’s error memory with a laptop.
  3. Your smartphone and an OBD2 adapter.

What is Valvetronic actuator?

Description. The Valvetronic actuator controls an eccentric shaft that determines intake valve lift, to help the car achieve the best possible performance and fuel efficiency. Unfortunately, these motors can fail over time, leading to a loss of power and the ‘check engine’ light appearing.

Where is valvetronic located?

Located in Pennsylvania, our team is obsessed with sound. From our marketing department to all of our highly trained engineers, we all have one goal of developing, manufacturing, and delivering the worlds greatest exhaust systems.

How do you reset a Tronic valve?

Basically you reconnect everything, turn the car ON (don’t start engine), and wait. You should here the car going through the “self test/calibration” on the valvetronic motor. Wait about 30 seconds and turn the car off. Next restart everything should be ready.

How does a Valvetronic exhaust work?

The Valvetronic system allows you to switch between being quiet and being loud with the push of a button via the included remote or through the smartphone application; this works by tapping into a vacuum source on your engine and connecting it to the control module.

What RPM does VANOS kick?

3500 RPM on E36 or very close to that number.

At what RPM does VANOS engage?

I’m pretty certian Vanos is load/RPM dependent, and turns on at around 4500rpm, not off/on/off at 1600-5000. The idea of it is to flatten the torque curve, which would be acheived by low overlap at low RPM and higher overlap at high RPM. Well, if you’re at the dyno and you have it backwards, you’ll know.

What happens when VANOS fails?

If the VANOS system fails, your BMW will be unable to properly regulate its fuel usage. As such, it may start to burn through more fuel than normal. Simultaneously, your vehicle may also sputter and accelerate sluggishly, as its engine will struggle to push out the increased amounts of fuel through the exhaust cam.

How do I know if I have a N54 or N55?

Probably the best way to tell without looking under the hood… is IF it has a DCT it is an N55. IF its an auto it is an N54. IF its a 6MT… you’ll have to look under the hood.

When did BMW switch from N54 to N55?

BMW’s N55 engine began production in 2009 and started replacing the N54 in 2010. However, most applications built in 2010 still carried the twin turbo N54. The N55 officially replaced the N54 in 2011 (with the exception of the 1M and Z4 35i).

Is the N55 good?

N55 Reliability Despite the many misconceptions that BMW’s as a whole are unreliable, the BMW N55 is actually a fairly reliable engine. The four most common problems with the N55 are, in no specific order, the valve cover and gasket, water pump, oil filter housing gasket, and VANOS solenoids.

How do you unlock the hidden menu on a BMW?

Do NOT follow this link or you will be banned from the site!