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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 04-25-2016, 05:40 PM
chiefnobk chiefnobk is offline
Location: Northern VA
Join Date: Jan 2013
Posts: 2
Mein Auto: 540i
AC rattle after AC shut-off

I've searched the forum for some time, and have not found anyone describing quite the same problem: I have a 2000 E39 (V8), auto-transmission. AC blows nice and cold, but after running the AC for a few minutes at highway speeds, the AC makes a rattle noise at slower speeds. Furthermore, if I shut the AC off, the rattle persists for some time. Acceleration/deceleration/bumps seem to exacerbate the rattle. It does NOT make any rattle noise at idle, which makes tracking down the problem harder. Does anyone have any ideas?
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Old 04-25-2016, 05:44 PM
ca2014mp2 ca2014mp2 is offline
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Location: San Jose
Join Date: Jul 2014
Posts: 2,546
Mein Auto: E39 2000 528ITA
idler pulley going loose... ac clutch breaking down.
Series E39 Vehicle code DP63 Model 528ITA Engine M52TU
Body type OTHER Catalog model USA Production date 1999 / 06
Transmission Automatic Steering Left Catalyzer YES

Production FROM : 1998/09/01 TO : 1999/08/31
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Old 04-25-2016, 06:31 PM
Brandon002 Brandon002 is offline
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Location: US
Join Date: Aug 2015
Posts: 1,119
Mein Auto: 2002 530I Sport
I had a similar issue on my 530. AC Compressor clutch was making the noise. I plan on replacing the compressor in the next week as the temps are climbing again.
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