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      06-29-2020, 06:02 PM   #5
PhaseP
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Drives: 325XI
Join Date: May 2010
Location: Earth

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You have an air to fuel ratio problem but it is not relate to the brakes.
Brake boosters in these cars don't use engine intake vacuum. A separate vacuum pump provides the brake booster vacuum. So your stalling has nothing to do with brake vacuum.

About brake booster loosing vacuum after sitting a day, there is a DIY you can find in this forum on how to fix that. It won't help your stalling issue though.
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