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#1
11-01-2009, 06:07 PM
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2004 X5 4.4i Loud bang from rear
Just want to say thanks for all the info on this site
 Just bought a 2004 x5 4.4i with 60k on it. Drives like a dream. Coming from Ford Explorer's, will never turn back..LOL!Anyway..4 times now when I slow to a stop, right when it stops I feel a slight lag like the car wants to go forward a bit first. If I hit the gas before that slight lag is over it makes this loud bang from the rear. Almost like I neutral slammed the thing. I read somewhere about rear carrier bushings, but doubt its that otherwise I would feel something not right as well when shifting under some acceleration I would think. Best way to describe is to take a car (not the beamer), rev it up in neutral, and drop it into drive. Any input would be appreciated. I have a one year GE powertrain warranty, but want to know where I stand before taking it to the dealer. Thanks 
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#2
11-01-2009, 06:23 PM
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That will almost certainly be the rear axle carrier bushes. Upgrade to polyurethane and they are stronger, last longer and easier to fit.
POWERFLEX BMW E53 X5 Rear Subframe Bushes, Tool avail. on eBay (end time 10-Nov-09 12:34:50 GMT) X5Girl, xxx
__________________
Black E53 V8 on 20's, lowered, drilled discs and poly bushes, strut brace and adjustable sway bars.
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#4
11-01-2009, 08:06 PM
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Could it be anything else? From what I have read they describe the subframe bushing problem as a clunk every time it shifts. Normal driving I dont hear a clunk, just starting off sometimes it sounds and feels like I was rear ended by another car.
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#5
12-10-2009, 07:37 PM
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Update:
Put the new bushings in. Definitely seemed tighter all around but.... It still occasionally makes the loud bang from the back after giving it gas when not coming to a complete stop at a stop sign. Trans slip? Only other thing I can think, but does not seem to slip at any other time and I would think a trans would slip or not slip not occasional slip. Any ideas? Thanks
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#6
12-10-2009, 07:47 PM
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May be a transmission programming issue... sounds like it is still in second gear but slams into first as soon as you hit the gas.
Give me the last 7 of the vin and I'll see if it has ever been in the shop for that issue and/or had the transmission programmed.
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is 
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#7
12-12-2009, 09:32 AM
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Quote:
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#8
12-12-2009, 02:05 PM
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Quote:
__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama) You make something idiotproof, they'll make a better idiot You think professional is expensive, just wait until you pay for amateur. Never let your sense of morals prevent you from doing what is right. Examine what is said, not who speaks. X5 pics RIP 4.6is..... 2003 4.6is
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#10
12-10-2009, 07:55 PM
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This is a common occurrence in some e53s.
Sometimes it's a software fix. http://www.xoutpost.com/bmw-sav-foru...yesterday.html
__________________
"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.” Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance……. 
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