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Old 01-15-2013, 01:08 PM
bigdean bigdean is offline
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Location: Newcastle Ca.
Join Date: Jan 2013
Posts: 1
Mein Auto: 05 645ci
05 645ci air pump makes noise

I just bought a 05 645ci. It runs really well when its cold but when it warms up the air pump starts making a whining noise when I let off the gas or stop. Also idles rough and wants to die when I let off break to take off.
Any ideas?

Sent from my SCH-I535 using Bimmer App
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Old 01-20-2013, 04:06 PM
davewoolley davewoolley is offline
D Woolley
Location: WPB Florida
Join Date: Jul 2012
Posts: 146
Mein Auto: 05-645 / 14 435I
I think I have similar problem, I can start car in morning and its all good do a couple errands than that whining sound plus when I start car up again I have to hit gas petal to keep it running. I don't have any idea what's up but will let you know if I find anything out.
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