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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 12-06-2012, 11:28 AM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 20,111
Mein Auto: 02 BMW 525i M54 auto 130K
How does the BMW E39 adapt to high altitudes when you go from sea level to 6000 feet?

This thread today, where a user went from a low altitude warm area to a high altitude cold area, got me wondering how the E39 adapts to altitude when it comes to engine control adjustments:
Quote:
Originally Posted by kross1300 View Post
I recently moved from San Diego to Breckenridge, CO and I have been having some trouble with how my car runs!
I've noticed in the past when I drove from San Jose (about 100' ASL) to Tahoe (around 6,000' ASL), my car used to stumble more so than I thought it should (but I've since replaced all the hoses due to a vacuum leak in the throttle boot and CCV lower vent hose and air pump vent hose).

To better understand how the bimmer adapts to altitude, I ask the general question:
Q: What does our E39 do differently at altitude than at sea level?
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Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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air metering, altitude, ccv, diagnostic repair, dme, engine management, icv, maf


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