Identifying The Symptoms Of A Failed BMW Eccentric Shaft Sensor

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Identifying The Symptoms Of A Failed BMW
Eccentric Shaft Sensor
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Eccentric shaft sensor is the centerpiece of your
BMWs VALVETRONIC system.
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Dont know what is VALVETRONIC system?
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Well, this is something that has made throttle
bodies obsolete in BMW cars.
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Its a computerized system that relies on
different types of sensors.

• The eccentric shaft sensor is one of them

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This presentation explains
Reasons signs of eccentric shaft sensor failure
What is an eccentric shaft sensor?
What purpose does it serve?
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Eccentric Shaft Sensor A Brief Intro
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You can find it attached to the cylinder head of
your BMW engine.
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It essentially monitors the rotation and
position of the eccentric shaft.
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The VALVETRONIC system uses this data to control
intake valve timing duration.
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If this sensor malfunctions, engine performance
will deteriorate.
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BMW Eccentric Shaft Sensor Failure Reasons
Explained
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Aging
Electric short circuit
Installation error
Eccentric shaft sensor can malfunction due to one
of the following reasons
Bad fuse or relay
Manufacturing defect
Damaged wire
Oil contamination etc
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Signs Your BMW Eccentric Shaft Sensor Has
Malfunctioned
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1- Engine lacks power
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One indicator of eccentric shaft sensor failure
in a BMW is sluggish performance.
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Sluggish engine performance may also signify
numerous other things.

• A mechanic will be able to exactly what the
  problem is

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Sign 2- Excessive fuel consumption
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VALVETRONIC works with VANOS to control intake
valve timing duration.
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If it starts acting up due to a bad eccentric
shaft, the engine will run rough.
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And, yes youll notice a sudden hike in the
rate of fuel consumption.
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Sign 3- Excess exhaust emissions
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Has your BMW been emitting a lot of exhaust fumes
lately?
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The cause could be a defective eccentric shaft
sensor.
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Sign 4- Engine warning light on
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Engine warning light may also signify a problem
with the eccentric shaft.

• Retrieve the error code to find out what exactly
  is wrong with your BMW.

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In Summary
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Eccentric shaft sensor helps the VALVETRONIC
system with many different things.

• So, ensure the upkeep of your BMWs eccentric
  shaft sensor.

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