After some search I got this:
Quote:
Originally Posted by mcreynol
I spent some time and instrumented the boost control signal on my OM606 G. This is a 10V PWM signal produced by the ECU. It controls a vacuum modulator that then pulls the wastegate closed. The results are interesting. The ECU is constantly playing with the wastegate.
Acceleration: the wastegate is held closed until the max boost is reached
Pedal lift: immediately opens wastegate
Idle: back on full boost (not that any boost will be produced)
Steady & flat @45mph: wastegate partially applied
Steady & flat @65mph: wastegate partially applied
Shift points under hard acceleration: wastegate momentarily opened between shifts
Driving on rolling hills moves the wastegate back and forth constantly.
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My MAF is out and as I said earlier nothing is moving on the wastegate area when I am on park and manually accelerate, would the MAF out open the wastegate right away? As above stated on idle it should be close?
Cheers.
Olivier
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E300TD year 2000. RUSTY
SOLD
cost a fortune to maintain on the road
but run well on WVO
Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long?
Third lasted a month then went away...
Fourth now... Corroded too...