I was working on the van yesterday and had the AFM disconnected from
everything to look for a water leak in the area of the coolant
distributor.  It's a strange leak that stops when the engine warms
up.  So I decided to start the engine and take a look under
there.  Turned the key and got a horrible noise since the air cleaner
housing was sitting on the alternator fan.  D'oh!  OK, moved that and
started the engine and it ran.  So no air going into the engine was
going through the AFM and the AFM was not connected electrically
either.  Hmmm, I thought.  Must be the idle circuit keeping it
running.  I opened the throttle and expected it to die, but no, it
revved up just like normal.  Engine was cold, so was in open loop
mode, but still.  Maybe since it had no load on it the engine was
able to spin up?   Seems like it would have gone terribly lean.  Any
ideas on this curiosity? This is a 2.1 digifant.

Edward

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