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A200 20V 3B / Motronic Fault / Engine s
Car: Audi 200 20 V 3B Turbo engine -90
Problem: Annoying ping/knocking problem.
It seems that the Knock sensor system works, but
reaction time is slow.
How slow is fast enough ?
Mileage is also worse than factory value; about 1,5 L
more per 100 km.
Mileage tested with warm enough engine and temperature
and friction OK
Conditions: 1B engine swapped to 3B engine
4 or 5 gear
RPM around 1700 1800
pedal pushed to metal and boost builds up
98 octane O2 - oxinated bleifrei super gas,
spark plugs: BRISK premium trispark according
to plug mf. OK
spark leads OK
fuel rail operating pressure OK
fuel delivery rate OK
lambda sond values OK
inleat air leaks OK
wastegate frequency valve ohms between 25 <-> 35
Foundings: I visited local ( very few good available) BOSCH
Center and result:
Motronic error code 00513 / 2111 Engine
speed sender (G 28) / Problems ?
- what could be wrong with the sensor system ?
- what could be the most likely problem / solution ?
- I have not yet done the speed sensor wire ohm test 1 <-> 2
about 1 kohm
1 to 3 and 2 to 3 infinite
- how does Motronic judge, that the speed sensor is not OK ?