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#1
04-12-2019, 12:38 AM
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Rough 3->4 shift in E53 4.8is (6speed) when cold
Also, if I am REAL light on the throttle, it will shift smoothly. If you have more than 30% throttle it bangs into gear like someone gave you tap from behind. The fluid & filter has been replaced (allegedly, I can't verify this information). So knowing all this, what should be my port of call to start troubleshooting? Apparently, I've read that the harness problem is only on the earlier models, and since the fluid and filter have been replaced already, I guess that leaves the shift solenoids as the next (relatively) inexpensive part to replace. Advice? 
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#2
04-12-2019, 01:52 AM
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Reset the adaptations although it usually shows as 1-2 shift and makes you think that you've got an old Ford truck with a bad u-joint. This is what I did on my 2005 4.4i also check your clutch pressures before and after clearing and gearbox
    Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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#3
04-12-2019, 05:34 AM
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Quote:
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PREVIOUS 2006 E53 X5 3.0D 2004 E53 X5 4.8is 2004 E53 X5 4.4 Sport 2011 E70 X5 3.0D with Aero kit 2009 E71 X6 50i Sport 2009 E70 X5 50i Sport 2007 E60 540 M Sport LCI (All time favourite car) 2007 E70 X5 4.8i Sport 2005 E53 4.8is 2003 E53 3.0 Sport
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#4
04-12-2019, 06:55 AM
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After resetting the adaptations pressures were fine although I also did a fluid flush and refill with new filters (fingers crossed) that it holds
 and I do have a couple of new (to me) solenoids for the future. Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course
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#5
04-12-2019, 07:21 PM
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Interesting. This site appears to have a wealth of info in it regarding these transmissions: Everything about your ZF 6HP26, 6HP19, 6HP28 transmission issues | BMW LOGIC7
How difficult is it to replace the solenoids? Just unbolt sump, pull filter out and go from there? Seems easy enough?
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#6
04-12-2019, 07:34 PM
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Interesting. This site appears to have a wealth of info in it regarding these transmissions: Everything about your ZF 6HP26, 6HP19, 6HP28 transmission issues | BMW LOGIC7
How difficult is it to replace the solenoids? Just unbolt sump, pull filter out and go from there? Seems easy enough?
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#7
04-12-2019, 07:38 PM
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__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#8
04-12-2019, 07:39 PM
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I made a thread about it too. Search delay reverse and my name. Should come up.
__________________
2006 4.8is, Black on White. SOLD Sniff Sniff. 2017 F85 x5m, Black on Red. BEAST MODE "The older we grow the greater becomes our wonder at how much ignorance one can contain without bursting one's clothes." - Mark Twain Unlock OBC post 5
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#9
04-14-2019, 01:30 AM
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Ok. Searching for “3 to 4 rough shift X5” brings up a ton of results on this board and others too. I think I’m gonna test the fluid level and make sure it’s good. People have replaced solenoids and it doesn’t appear to have helped.
Just gonna leave it.
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