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#1
06-18-2012, 11:10 AM
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About to use my X as target practice
I am at the end of my rope with this BMW! Every time i fix something something else breaks. Just finished putting in a new transmission valve body filter and oil in on friday. start it up and drive it around my shop a few times and everything seemed to be working great i was happy. I go to drive it home and i make it about a half a mile from my shop and my tach and nav screen go out and then every light on the dash lights up along with trans fail safe and self level inactive. Now i'm looking for a big tree to run into! Got it back to my shop and shut it off for about 5 minutes. started checking connections and everything looked good. Battery voltage was 12.8. Started it back up with my meter on the battery. voltage dropped to around 11 and then back up to 12.8 after it was started. Hit the gas and the voltage Jumped up to 14.6 then back down to 12.5 and it did this for a few minutes. when i held the engine at around 3000 rpm it jumped up to over 16 to 17 volts and all the lights on the dash came back on. I'm thinking it a bad alternator or at least a bad regulator. I'v been reading on here all weekend and i guess ill start with a new regulator and go from there. I have 40,924 miles on this thing and it is falling apart! My list of repairs is a mile long so far. Any thing else I should look for please let me know.
thanks 
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#5
06-19-2012, 11:11 PM
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Fluctuating voltage is typically a sign of a bad alternator.
__________________
/ / / Mike BMW X5 Xdrive50i 2015 F15 BMW 325iC 1992 E30 BMW X5 4.4i - sold BMW 335i X Drive 2010 - sold BMW Z4 3.0is 2006 - sold BMW 325is 1993 - sold BMW 2002 1976 - sold X5 Garage
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#7
06-20-2012, 09:33 AM
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At 40,000 miles? Wow. Knock on wood I ahve not seen a dash light in over a year. 102,000 miles and going strong.
__________________
2005 BMW X5 4.4 Sport Upgrades: Dinan Cold Air Intake Dinan Stage II Software Akebono Euro Cermaic Pads Brembo Rotors Titan Silver Metal Gauge Rings DICE IPOD Module Hardwired Passport 9500ix Radar/Laser Detector
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#8
06-20-2012, 09:58 AM
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Good luck. Keep us posted and not abandon the thread after you have the problem fixed. It might help others when searching for solution of their own problem.
__________________
 00 E39 DINAN S1 //M5 (82k miles) 06 E53 DINAN 4.8iS, born 2/18/2006 (126k miles) http://www.xoutpost.com/bmw-sav-foru...s-my-dslr.html 90 Straman Z32 TwinTurbo Convertible, (1 of 44 ever made) 5 speed, 444rwhp/451rwtq 01 360 Novitec Spider F1 (26k miles)
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#9
06-20-2012, 11:54 PM
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Here's a warning of things that will likely break....
Radiator Water pump Alternator Drivers door handle Driver's window regulator Final Stage resistor Mass Air Flow Sensor O2 sensor(s) Water pump Power Steering hoses Fuel Vapor Valve Pixel display in Instrument Cluster Transmission
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