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Author Topic: off idle stumble  (Read 2522 times)

redhead

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off idle stumble
« on: February 14, 2007, 09:20:29 PM »
Hi gang,

When I just blip the throttle a crack and then release it the engine stumbles for a split second. If I don't release the throttle the engine will rev up as normal. Any ideas wht this might be?

TIA,
Gene
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Shocker

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off idle stumble
« Reply #1 on: February 14, 2007, 09:58:42 PM »
Could be your Idle Control Valve, try cleaning it.  Or could be a vacuum leak.
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bmwman91

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off idle stumble
« Reply #2 on: February 15, 2007, 03:28:55 AM »
This sounds pretty normal.  A lot of it has to do with the stock air flow meter.  It has a moving flapper door inside, and is subject to inertial forces.  Simply put, blipping the throttle gets it bouncing a little, and that confuses your ECU.  Long story short, it is pretty normal.
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