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#1
04-10-2017, 04:58 PM
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'06 4.8L - assistance with codes
2B70 - DISA 2B71 - Failure DISA 2B72 - DISA Temp Warning The code descriptions come from an online search, not the shop. The plot thickens when I tried to source a replacement DISA valve - evidently it's a 6 cylinder only part and not found on BMW's V8's. Thoughts on what might be wrong and how I can run this down? We are remote from a dealer - about 3-1/2 hour drive away - so would like to consider that the option of last resort. Thank you. 
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#3
04-12-2017, 09:19 AM
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If they are a non Euro shop what did they use to pull the code?
Connect a fuel pressure gauge at the fuel rail and see what type of pressure you have with KOEO (key on engine off) and with the engine running. Might not have been a bad regulator, but a bad fuel pump. Your engine doesn't have a DISA valve because it has enough torque in it already.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#4
04-12-2017, 01:24 PM
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upallnight - thank you for the suggestions. I've got a call in to determine what kind of code reader the shop uses - assume it's something generic - but will for sure suggest a pressure test for the fuel pump. Thanks again.
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#7
04-13-2017, 09:41 PM
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It's spent its whole life in AK - previous owner bought new from dealer in Anchorage. 4.8L is a beast. It's loaded - we have yet to encounter an option it does not have. LOVE the heated seats and especially the heated steering wheel. Rear seats are heated as well. We are Bimmer people, though somehow the wife ended up with a Mazda SUV prior to the X5 - zero comparison. We run studs in the winter though likely unnecessary - however winter tires a must when it's -20 deg F (standard all weather tires are hockey pucks at that temp). We did away with the height adj air suspension though - started with sensor failures, then one of the fronts went - it's all conventional struts/springs now. Gas is expensive here (think CA prices) but wife's commute is short, so no biggee. Bit of a love/hate for me - love the performance, but taking care of it is a b*tch.
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#8
04-13-2017, 10:26 PM
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__________________
1998 E39 528i 5sp MT 2006 E53 X5 3.0 6sp MT
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#9
04-13-2017, 10:45 PM
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Quote:
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2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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#10
04-15-2017, 06:29 PM
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Quote:
Not bad with different software/s already loaded/running and with warranty on hardware. I've spent more on mine due to higher laptop specs.... If the seller can include/upgrade with ISTA-p....then you're set.
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