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cjmasterdiver
05-02-2007, 01:51 AM
I have had my 2003 E320 to the dealer a couple of times for a rough idle and occasionally the engine will stop. On the last trip I was told it was because the air breather was not on properly. I have checked for this before taking it in to the shop and never found that problem. Also , I find nothing between the input from the breather to the connection to the engine that meters the air. This is also an intermittent problem and if the breather was the cause wouldn't it be a constant problem?

lkchris
05-02-2007, 11:23 AM
The sequence is

air filter housing
tube
mass air sensor
tube
intake manifold.

The system has to be air tight from the MAS on.

This system isn't "breathing" as the flow is one way only.

There are crankcase ventilation "breathers" attached to the intake tubes in all liklihood.