I recently replaced my fan pulley/housing on my 300e (now to be known as "the wedding car") 2 days later, I started to get some erratic idling, now it randomly stalls out. When I decelerate, the idle just goes lower, lower, then stalls. At stop light, stalls. Starts back up immediately.

I always had a problem with a slightly high idle, about 900-1000 in park.

Now, when it does idle, it idles perfect. (600 rpm)

Just a thought: I forgot to re- install my fresh air tube. the plastic pipe that goes from the air filter housing to the grill. Would that make the difference?

Any ideas on where to start?

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2