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  #11  
Old 10-21-2011, 01:06 AM
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If the problem started when you had the leak and added fluid, I would try using the correct fluid. The Amsoil Universal ATF is claimed to work for just about every transmission by Amsoil, but it doesn't actually meet the LT71141 spec, it is just claimed to be an acceptable alternate by Amsoil. That specific fluid was developed with specific frictional characteristics to smooth shifts, and rough shifting is the problem you are experiencing.

It would be cheaper than just about any other fix, and might be worth trying first.
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  #12  
Old 10-21-2011, 07:55 AM
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I would think it unlikely you damaged anything that quickly (tho not impossible given the mileage on the odo).

JCL is probably right but you would have to flush rather than just a drain and fill I think. If that fixes your problem you might want to think about another flush 10k miles later as I doubt that you would get all the Amoil out in one go.

Good luck!
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  #13  
Old 10-24-2011, 11:32 AM
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I did the expensive oil change this weekend but no luck. I still get hard downshift from 2nd to 1st and a slip sometimes from 3-4th. I also noticed that when I drive at 80km/h and go in N then back to D sometimes I get a hard push, like a hard downshift and then it's ok. Sometimes it's normal, I move from N to D back and forth with nothing other than the rpms moving to the right speed.
Could this be a symptom of a valve body problem and a Valve Body Kit will save me or I should look for a TC and full transmission rebuild kit. I feel like the tranny controller does not change the gear at the matching IN/OUT speeds. Could be a sensor or something?
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  #14  
Old 10-25-2011, 09:58 PM
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Hello everyone,
this may be a little offtopic but I have a 2006 4.8is with 53k miles which is having some issues with the transmission. maybe you can give me some input (much appreciated)

1. pause of exactly 2 seconds before engaging into reverse in drive, park or neutral-I heard something about a release of pressure but why from neutral? or just in general
2. slow to shift when cold from 1-2 and 2-3. It overrevs and then catches
3. when I am coming to a stop to roughly 5mph and then push the gas, the car jerks into gear
4. rough downshift from 2-1 when decelerating before coming to a stop.


Should I re-program the tranny with new software? Any other ideas? I would really appreciate any insight into this
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  #15  
Old 11-02-2011, 12:20 PM
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Question

OK,

I think its my turn to join the tranny club. HAHA well these are my current issues i have started to notice ever since the temperature here in atl, ga has dropped to high 38-49 at night.

1) In the morning so far twice i have engaged in drive and it engages normally but right after it should switch from 1st to 2nd engine revs now i notices it and dont hit the gas rev only surges 100-300 rpm before i take my foot off the gas and give it a sec and then its ok.

2) I have noticed that when im just coasting with my foot on the gas peddle applying a bit of gas to keep or maintain my speed especially 55-62 specifically around 62 while the RPM is dead on 2,000- 2,200 I start to get jolts. as if on/off on/off like the torque converter is engaging then dissengaging but i do not see any changes in rpm. at first i thought maybe clutches are going but then shouldnt my rpm surge?

but im not sure if its tranny since i pulls fine from a rolling to 90mph no hesitation nothing no blurps or hicups just a constant shifing to 5th and then just keeps pulling but while coasting its like right side of the car is hitting somthings or im loosing power and i get jerked back and if i let go of the gas things normalize.

any input would be great.
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  #16  
Old 11-02-2011, 01:10 PM
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Me too

Quote:
Originally Posted by cmetter View Post
Hello everyone,
this may be a little offtopic but I have a 2006 4.8is with 53k miles which is having some issues with the transmission. maybe you can give me some input (much appreciated)

1. pause of exactly 2 seconds before engaging into reverse in drive, park or neutral-I heard something about a release of pressure but why from neutral? or just in general
2. slow to shift when cold from 1-2 and 2-3. It overrevs and then catches
3. when I am coming to a stop to roughly 5mph and then push the gas, the car jerks into gear
4. rough downshift from 2-1 when decelerating before coming to a stop.


Should I re-program the tranny with new software? Any other ideas? I would really appreciate any insight into this
I am experiencing the exact same symptoms on my X5 with the exception of #1. I have a 2006 4.4 with 58K miles. My CPO ends on December 30, so I will have to visit my dealer soon. A couple of years ago, I informed my dealer of some unusual shifting when coming to a stop. At the time they told me it was normal. Since, it would occur infrequently I did not think much of it.
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  #17  
Old 11-02-2011, 06:36 PM
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Cmetter, try checking the fluid level.
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2003 4.4i black ext./black int./black headliner
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD sadly...
2009 E70 35d, black ext./black int./black headliner (shipped to Europe)

Hmmmm, love those black headliners!

Other hardware:
2005 Tundra crew cab, son's DD and weekend hauler
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
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  #18  
Old 11-10-2011, 12:39 AM
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Hey TriX5 what made you decide that you had a bad torque converter? Today i finally have started to hear some noise so the car is parked till i can get it fixed. ive compared the noise i hear plus the location to youtube videos of bad torque i can now say 100% i got a bad torque. Can you confirm what you heard or symptoms?
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  #19  
Old 11-10-2011, 01:26 AM
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@178k I guess I better knock on wood. LoL. Did the fluid and filter change last week, but need to drain and refill again as the initial fluid/ filter swap only gets half out. Still shifts great....
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  #20  
Old 11-10-2011, 02:55 PM
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So, after reading many threads on other forums about TC and matching sounds to mine. Some folks here said they received an error code regarding slippage but I have none. Now yesterday after i finally made it home I got the tranny fail safe mode. But no engine light or anything. I will try to read it and see if any codes are posted. Im also wondering if the vibration that I have been fighting has just been signs or a going bad torque converter? some research has shown that some ppl did have this on other model cars ....so I was just curious?
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