Chevrolet Aveo/Kalos Failure 2011

Hi Wal7er, it was added that if the Misfire is severe enough it can make damage to the catalyst, because fuel can reach without burning the catalyst, which occurs that the temperature of it rises a lot and is damaged. That is why if the ECU Motor detects an ignition failure in a specific cylinder disconnects the injury that feeds that cylinder with the purpose of not damaging the catalyst. This could explain why when you connect the cylinder 2 injury, it works about 20 SY then it is cut. Additionally, if the ECU Motor calculates the catalyst temperature outside limits, the witness check in the time the catalyst can damage the catalyst, additionally I can tell you that the idle control strategies must be modified when a misfire is detected, if not the engine low the revolutions quite a lot, greetings, greetings

This is what the scanner shows:

[EOBD]
Record3 -> Read Codes -> Stored Codes
P0300 Random/Multiple Cylinder Misfire Deteced


[EOBD]
Record3 -> Live Data -> Complete Data Set

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1

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dtc_cnt 1
Fuelsys1 Cl
Fuelsys2 -Load_pct
(%) 4.7
ECT (° C) 48
SHRTFT1 (%) -1.6
LongFT1 (%) -2.3
MAP (KPA) 46
RPM (RPM) 898
vss (km/h) 0
Sparkadv (°) 1.5
IAT (° C) 27
TP (%) 0.0
O2SLOC B1S12-B2S -----
O2B1S1 (V) 0.125
SHRTFTB1S1 -0.8
O2B1S2 (V) 0.695
SHRTFTB1S2 (%) 99.2
OBDSUP OBDII
MIL_DIST (KM) 853
FRP (KPA) 114.787

REVIZE THE FREEZE FRAME.

Hi Wal7er, I am analyzing the painting, the scanner in the current data does not show you the misfires, very important, more than the values ​​are the trends, waiting for data, greetings cordials.

Hi Wal7er, I have doubts about the picture that I post in the sense that if they are the current data or is the Frezze Frame Data. I don't know if I explain myself well, because it is not the same, cordial greetings.

Hello Wal7er, checking the picture then realized that they were current data. With the heating engine (48 c), idling, operating in Cl (Close Loop), I bone decrease loop. The fuel correction parameters respect the signal of the O2 Sensor show a slightly rich condition here all more or less ok considering that at least one or more cylinders there is a more cylinder Combustion The only thing that seems strange to me is the load value calculated approx 4.7 %, quite low considering that the engine, according to what you say is operating in three cylinders. The other is the advance to the ignition 1.5 degrees TB quite low. EVISARCONECTIONS TO THE ECU MOTOR Especially the masses, check connections to the MAP, possible leaks in the multiple of admission with emphasis on cylinder 2, and if you do not have access to Freeze Frame, Misfire Counters an oscillogram of the CKP and CMP could give you some clue and step to see the synchronization between the two (corecta synchronization of the distribution). Well, the ones that happens is that several years ago, in a very similar system a similar problem that could never detect, obviously in that time I handled less info and experience, I am interested in knowing what happens in that chub, in any case they are in these difficult cases where you learn the most and that is the idea. kind regards