wenn der Motor richtig im Notlauf ist, dann schaltet er meine ich eine Bank komplett ab, und automatisch kommt dann der dritte Gang als Notgang = failsafe mode. Und die Drosselklappen oeffnen halt nur etwas.
Also das mit dem 3. Gang jetzt ist normal fuer Notlauf.
unkonforme Werte>>zack>>> Getriebenotprogramm
Hier mein Versuch mit dem Fehlerbaum
M70 Fault Tree -- SIMPLE VERSION
hier noch einige Beschreibungen auf meiner Seite
DIAGNOSIS - EML FAILURE
Hab mal alles wichtige Zusammegefasst, was ich so zusammengetragen habe und selber getestet habe:
Just read a post from RF E31 by a rather experienced forum member Mark in SBA . He showed a service diagram for DME 1.7 indicating that:
"If plug lead 6 or 12 (the ones with the inductive pickup donuts on them) are disconnected or short, a protection circuit embedded within the Motronic will severely clip the duty cycle of the injectors for that side to protect the catalysts from being drenched in raw, unburned fuel."
Called the "Catalytic converter protection function", I wonder if my DME 1.2 may not have that function, thus I was able to pull off one or both Cam-Position-sensor plugs and the M70 can still be started. That may explain the contradicting observations. Anyone with Motronics 1.2 like to try an experiment (by pulling off a Cam-position sensor plug from front center of engine and see if engine can start?)
http://forums.roadfly.com/forums/bmw...9279531-1.html
Mein Testresultat von Samstag mit MOTRONIK 1.2 hier
http://www.bimmerboard.com/forums/posts/660913
Und Tim Meek, der Elektronik Guru aus U.K., sagt mir dazu auf Anfrage:
"The sensors on ignition leads 6 and 12 are not there to disrupt the injector duration, they are there to identify the camshaft position and are a direct forerunner of the camshaft sensor. The sensors are called 'cylinder identification sensors' and detect when cylinders 6 or 12 fire, they do not measure the primary circuit, how could they, they are stuck on the ignition leads! This is not part of the EML system, any failure will not light the EML indicator. It is a basic ECU input that is found on straight-6's that do not have EML as well as EML variants of both the M30 and M70.
Without the cylinder identification sensors, the ECU's do not know which of the two unique revolutions the crankshaft is on. This does not matter to the ignition as the spark is directed to the correct cylinder by the distributor. It does matter to the injection circuits which should fire every two crankshaft revolutions or every one camshaft revolution.
During cranking the only reference signal is the crankshaft sensor and 'double injection' is maintained until the ignition from cylinders 6 and 12 are detected. From this point on the ECU is aware of the correct camshaft position and can fire the injectors every two crankshaft revolutions. If the cylinder identification sensors fail to detect ignition pulses then the injectors continue to fire every crankshaft revolution but the injector duration is reduced to prevent damage to the catalytic converters."
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Also, der M70 mit 1.2 laeuft, egal ob eine zwei oder keine angeschlossen ist. Selber getestet.
Nun haette ich gerne noch einmal einen mit einer 1.7, der das selbe macht.
Dansker: wenn es die M1.7 352 Motronik ist, dann werden auch die ESV abgeschaltet im Notlauf.
hier habe ich noch etwas gefunden zu dem Thema, in USA gab es sogar eine SI: Subject: O2 Sensor Termal Shock recall...M70 engines
Posted on: 2009-08-26
I just got on my computer an updated copy of the TIS BMW software,in the engine alert for M70 engines there's one called "O2 Sensor termal shock" named:SI 110896164 released by BMW AG in 01/1997.
Symptom: Irregular idle and shaking when driving.
Cause: stop and go driving and short distances will cause water residues on the cat,a cold start can cause the failure of the O2 sensors caused the termal shock
Solution: O2 Sensor delayed heating with a relais...
Parts:
O2 Sensor 11781733628
Delayed heating relais 11781745829
Cables kit 12511745758
Do you guys have any idea about this mod?
that's a relatively new update by BMW...
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kann da mal jemand in den deutschen Unterlagen suchen nach dieser SI
110896164
Thermoshock Schutz erklaert, Motronik 1.7
Cannister And Breather Valve Photo by shogun_bucket | Photobucket
deshalb pruefen, ob die Zylinder 6 und 12 wirklich zuenden.
Ich wuerde auch noch einmal beide Drosselklappen demontieren und auseinander nehmen, hab ich schon oefter gehabt, dass jemand falsch zusammen gebaut hat, meist klemmen dann die Kohlen und haben keinen Kontakt.