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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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#1
07-04-2009, 07:22 AM
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DIY: Hose for Altitude pressure sensor
My rubber hose for Altitude pressure sensor shows age and starts to crumble in my hand (#2 in link below):
http://www.realoem.com/bmw/showparts...=13&fg=15&hl=2 VACUUM HOSE BLACK PN: 11727545323 (Listed price $18!!!). It is right in front of passenger's side strut tower. I used standard vacuum tubing (or windshield washer tubing). The job takes exactly 5 minutes including cutting tubing. Use alittle oil to slide the new tubing through the grommet. This is the shortest, quickest and easiest DIY of the E39 DIYs!!! Skill level is 0 out 10 (10 is level of engine rebuilding!). Actually it took me longer to finish my beer than doing this simple DIY! 
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#2
07-04-2009, 02:04 PM
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Hi Cam! What was the symptom that caused you to check the hose? After replacement, did you notice any difference?
Happy 4th!
__________________
 1999 540it - Jet Black/Sand Beige, style 5 rims, Zionsville Cooling kit 1984 533i - Schwarz/Schwarz, 17" style 65 reps 1997 318ti Sport - Schwartz II/Schwartz Anthratz, style 68 rims 1995 318ti Sport - Schwartz II/Schwartz Anthratz, style 27 rims 1994 325i Sedan - Bostongrau/Tan 1991 318ic - Schwarz/Anthratz Stoff 1985 635CSI - Schwartz\Sand - Sold 1984 318i - Champagne/Tan, Stock - Sold BMWCCA# 160411
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#3
07-04-2009, 02:08 PM
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Rich,
No symptoms just looking around the engine bay and wondered what this thingy was. Touched the hose and it crumpled in my hand! Later I researched and found out this is an Altitude Sensor. I guess it measures mm Hg in reference to sea level to adjust fuel-to-air ratio. Nothing important, I guess without the hose the Altitude Sensor still works but now at risk for debris entering it. If you look carefully then the hose goes into a well-enclosed environment. Happy 4th!!! Fireworks tonight yahoo!!!!
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#4
05-04-2013, 10:49 PM
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Quote:
 Anyway, a bit of googling came up with this for the BMW E39 APS: See also: - How does the BMW E39 fuel trim behave at high elevation (1) (2) (3) & where is the BMW E39 altitude pressure sensor (APS) (1)
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Note: Your mission, should you decide to accept it, is to 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, in seconds!
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