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Discussion Starter #1
My curiosity got the better of me, so I decided to check VANOS values w/ INPA. As of right now, all seems okay, but looks to me Messwerte Einlass 2 (Inlet) is teetering on the pass/fail threshold.

If I run the bleed procedure in INPA will this have an effect on the below values? Positive or Negative (unlikely, I'm sure)?


Here are the results.

Messwerte Einlass 1

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.666
I-Anteil Regler Ventilstrom [mA]: -123
Status: 06 Systemtest beendet

Messwerte Auslass 1

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.632
I-Anteil Regler Ventilstrom [mA]: -82
Status: 06 Systemtest beendet

Messwerte Einlass 2

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.620
I-Anteil Regler Ventilstrom [mA]: -36
Status: 06 Systemtest beendet

Messwerte Auslass 2

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.675
I-Anteil Regler Ventilstrom [mA]: -55
Status: 06 Systemtest beendet
 

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Bleeding has sometimes helped and sometimes made them worse from what i have seen... MCc420 and b767capt have reset their vanos adaptions in adaptions read/delete, and it has also helped their values.. BLeeding nor resetting adaptions have helped my failed values but since yours have not failed it may help
 

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My curiosity got the better of me, so I decided to check VANOS values w/ INPA. As of right now, all seems okay, but looks to me Messwerte Einlass 2 (Inlet) is teetering on the pass/fail threshold.

If I run the bleed procedure in INPA will this have an effect on the below values? Positive or Negative (unlikely, I'm sure)?


Here are the results.

Messwerte Einlass 1

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.666
I-Anteil Regler Ventilstrom [mA]: -123
Status: 06 Systemtest beendet

Messwerte Auslass 1

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.632
I-Anteil Regler Ventilstrom [mA]: -82
Status: 06 Systemtest beendet

Messwerte Einlass 2

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.620
I-Anteil Regler Ventilstrom [mA]: -36
Status: 06 Systemtest beendet

Messwerte Auslass 2

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.675
I-Anteil Regler Ventilstrom [mA]: -55
Status: 06 Systemtest beendet
Those values indicate the test did not complete properly. Was the engine running for this test? None of the 4 cams reached any timing value at all indicating no motion.
 

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Discussion Starter #4
My curiosity got the better of me, so I decided to check VANOS values w/ INPA. As of right now, all seems okay, but looks to me Messwerte Einlass 2 (Inlet) is teetering on the pass/fail threshold.

If I run the bleed procedure in INPA will this have an effect on the below values? Positive or Negative (unlikely, I'm sure)?


Here are the results.

Messwerte Einlass 1

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.666
I-Anteil Regler Ventilstrom [mA]: -123
Status: 06 Systemtest beendet

Messwerte Auslass 1

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.632
I-Anteil Regler Ventilstrom [mA]: -82
Status: 06 Systemtest beendet

Messwerte Einlass 2

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.620
I-Anteil Regler Ventilstrom [mA]: -36
Status: 06 Systemtest beendet

Messwerte Auslass 2

Max. Anschlag [°KW]: !0.0
Min. Anschlag [°KW]: !0.0
Verstellzeit zu kleiner Spreizung [ms]: 0.0
Verstellzeit zu grosser Spreizung [ms]: 0.0
Ventilguete [%]: 0.675
I-Anteil Regler Ventilstrom [mA]: -55
Status: 06 Systemtest beendet
Those values indicate the test did not complete properly. Was the engine running for this test? None of the 4 cams reached any timing value at all indicating no motion.

Hmmm....

That explains the 0 degrees for Max / Min angle.

Yes, engine was running. Started from cold. Idled for roughly two minutes before a I had the VANOS screen pulled up in INPA.

Also, there is a Start (F1) Stop(F2) feature. Do you know what this refers too?
 

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Discussion Starter #6
Those execute the actual test.
Duh. Thank you.

I will give it another go tomorrow.

"Only way to learn is to practice"
 

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A point of interest, the "I-Anteil Regler Ventilstrom" is the I component of a PID controller and is effectively an offset value for a setpoint current (about .750A) which places the VANOS solenoid spool in it's mid position (which "locks in" actuator piston pressure). This is not actually a negative value of current as I once believed. The DME only uses a single power wire for each solenoid with the other being ground, so it's only a half-bridge PWM controller. The negative value means it's offsetting in the reduce direction and can be an indication that the return spring is weakening on the spool due to age.
 

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Discussion Starter #8
A point of interest, the "I-Anteil Regler Ventilstrom" is the I component of a PID controller and is effectively an offset value for a setpoint current (about .750A) which places the VANOS solenoid spool in it's mid position (which "locks in" actuator piston pressure). This is not actually a negative value of current as I once believed. The DME only uses a single power wire for each solenoid with the other being ground, so it's only a half-bridge PWM controller. The negative value means it's offsetting in the reduce direction and can be an indication that the return spring is weakening on the spool due to age.
Interesting, I had to read this a couple times for it to sink in, but I follow. I am partially more familiar w/ PLC's not too much w/ PID's.

So, the setpoint value at mid-point is (.750) and any deviation (an error) requires attentive correction from the PID. Whether positive or negative offset? Is there a state of happy medium for the valve? Midpoint?

I'll have to research further on VANOS valve operation, to fully understand. Thanks for thee insight!
 

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Discussion Starter #9 (Edited)
I re-"ran" the test, here are the results...

I'm still uncertain of the state of the Valves, are values below consider w/in acceptable parameters? Screenshots attached as .pdf

Messwerte Einlass 1

Max. Anschlag [°KW]: 147.7
Min. Anschlag [°KW]: 80.9
Verstellzeit zu kleiner Spreizung [ms]: 140
Verstellzeit zu grosser Spreizung [ms]: 1000
Ventilguete [%]: 0.666
I-Anteil Regler Ventilstrom [mA]: -156
Status: 06 Systemtest beendet

Messwerte Auslass 1

Max. Anschlag [°KW]: 129.2
Min. Anschlag [°KW]: 91.6
Verstellzeit zu kleiner Spreizung [ms]: 120
Verstellzeit zu grosser Spreizung [ms]: 1000
Ventilguete [%]: 0.632
I-Anteil Regler Ventilstrom [mA]: -251
Status: 06 Systemtest beendet

Messwerte Einlass 2

Max. Anschlag [°KW]: 148.0
Min. Anschlag [°KW]: 80.9
Verstellzeit zu kleiner Spreizung [ms]: 130
Verstellzeit zu grosser Spreizung [ms]: 150
Ventilguete [%]: 0.620
I-Anteil Regler Ventilstrom [mA]: -68
Status: 06 Systemtest beendet

Messwerte Auslass 2

Max. Anschlag [°KW]: 129.0
Min. Anschlag [°KW]: 91.4
Verstellzeit zu kleiner Spreizung [ms]: 150
Verstellzeit zu grosser Spreizung [ms]: 1000
Ventilguete [%]: 0.675
I-Anteil Regler Ventilstrom [mA]: -113
Status: 06 Systemtest beendet
 

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Hi there,
i think my problem with my engine belongs in this topic.
My s85 has loss of power from 3500 rpm up to max rpm.
A had a driving event last weekend and noticed that the engine was using 0.7 L oil in 350 km.
When i drove home i noticed loss of power.
There was no engine error code shown in the display
It is possible the oil use has nothing to do with the power loss but i think it is good to tell about it.

At home i did a compression test and the readings where from 8 to 9 bar for all cilinders. Not bad i think.
All spark plugs looked oke and had the same color.
when i connected with bmw inpa the engine showed no codes so i did some tests with vanos and lambda.

I noticed a few things with the tests.
system test L sonde dyn en katalysator: katalysator diagnosetest bank1: 0,256. bank 2: 1,673

And with the vanos test i noticed that one measurement was in to the red of the green/red beam.
Messwert einlas 2: verstellzeit zu kleine spreizung ms 1000
Im thinking about a bad lamda sensor bank 2 or a bad vanos inlet solenoid at bank 2.
Maby somone can help.
Greetz
 

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Hi there,
i think my problem with my engine belongs in this topic.
My s85 has loss of power from 3500 rpm up to max rpm.
A had a driving event last weekend and noticed that the engine was using 0.7 L oil in 350 km.
When i drove home i noticed loss of power.
There was no engine error code shown in the display
It is possible the oil use has nothing to do with the power loss but i think it is good to tell about it.

At home i did a compression test and the readings where from 8 to 9 bar for all cilinders. Not bad i think.
All spark plugs looked oke and had the same color.
when i connected with bmw inpa the engine showed no codes so i did some tests with vanos and lambda.

I noticed a few things with the tests.
system test L sonde dyn en katalysator: katalysator diagnosetest bank1: 0,256. bank 2: 1,673

And with the vanos test i noticed that one measurement was in to the red of the green/red beam.
Messwert einlas 2: verstellzeit zu kleine spreizung ms 1000
Im thinking about a bad lamda sensor bank 2 or a bad vanos inlet solenoid at bank 2.
Maby somone can help.
Greetz
It seemed that de katalysator diagnosetest with inpa was not topical.
The readings did not change at all during the test.
I discovered a defect temperature exhaust sensor on bank 2.
After replacing it with a new one inpa showed that it was working again but it had no influence on the power loss.

There is also a oil leakage in front of the engine. I cant see what is leaking but it can be a vanos part.
I think the vanos ventil güte readings are not so good for E2 (see picture).
Do i need a new solenoid?
Has this reading any thing to do with vanos pressure?
 

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So i tested the vanos pump pressure and it was oke. Readings from 65 bar from idle to 90 bar in high rpm.
i changed the vanos solenoid on E2 and the ventil gute are all fine now.
The car pulls little bit better but its not like it used to be.

I checked my engine oil filter and it looks oke.
I only found 2 very small(1mm) pieces of metal.

The next step is to change the fuel filter although the fuel test with inpa did not detect a error.
 
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