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-   -   06 750 Transmission problem? (http://www.bimmerfest.com/forums/showthread.php?t=479173)

myeagleputt 08-23-2010 02:11 PM

06 750 Transmission problem?
 
Hello all, been doing a lot of searchon on my problem with no success and was hoping to get some help here. I have an 2006 750i. I a hard to describe slip, tug, jerk,,, its slight but noticable. This happens mostly when I accellerate over 60mph, then come down to around 50 and slowly accellerate through 60 again, up a hill seems a bit worse. Also just started happening a bit when I start off and hit around 40. Not sure if the clutch is slipping of the abs is engaging or what? No lights come on and it seems when I accelerate quickly or get on it, its fine.... Anyone experienc anything like this?

Thanks for your help...

Crasher1339 11-04-2010 10:23 PM

different transmission problem
 
I have a transmission problem, although sounds different than yours. Periodically if I accelerate after nearly stopping (i.e. at a yield, or at a stop sign), the trannie kicks in with a bang, then drives fine. Also, I have twice had the unnerving experience of putting it into drive, only to have the transmission not do anything (the engine just revs, or you can only go in reverse) except set off a transmission malfunction alert. Fortunately after turning the car off and then starting it up again it works fine, which makes me think it's a computer issue. I brought it in to have BMW look at it, and of course neither problem occurred during the test drive with the mechanic, and nothing showed up on the fault codes. Go figure.

I think I might also sometimes experience what you're describing, but as you noted it goes away if you goose the gas a bit, so I've just figured the computer isn't downshifting enough for my taste.

jbhoot 11-04-2010 11:21 PM

Do you get any messages come up?

csmeance 11-05-2010 12:04 AM

Quote:

Originally Posted by myeagleputt (Post 5416663)
Hello all, been doing a lot of searchon on my problem with no success and was hoping to get some help here. I have an 2006 750i. I a hard to describe slip, tug, jerk,,, its slight but noticable. This happens mostly when I accellerate over 60mph, then come down to around 50 and slowly accellerate through 60 again, up a hill seems a bit worse. Also just started happening a bit when I start off and hit around 40. Not sure if the clutch is slipping of the abs is engaging or what? No lights come on and it seems when I accelerate quickly or get on it, its fine.... Anyone experienc anything like this?

Thanks for your help...

Does it feel like the car is stuttering? If yes, it could be the torque converter locking and unlocking that you are feeling. My suggestion would be to try the "resetting" of the ZF algorithm with the gas pedal trick. Also try this, go to 60 and switch to M mode, then decelerate to 50. Down shift 1 gear (probably 6th to 5th) and try accelerating. Do you still get that feeling?

Quote:

Originally Posted by Crasher1339 (Post 5600254)
I have a transmission problem, although sounds different than yours. Periodically if I accelerate after nearly stopping (i.e. at a yield, or at a stop sign), the trannie kicks in with a bang, then drives fine. Also, I have twice had the unnerving experience of putting it into drive, only to have the transmission not do anything (the engine just revs, or you can only go in reverse) except set off a transmission malfunction alert. Fortunately after turning the car off and then starting it up again it works fine, which makes me think it's a computer issue. I brought it in to have BMW look at it, and of course neither problem occurred during the test drive with the mechanic, and nothing showed up on the fault codes. Go figure.

I think I might also sometimes experience what you're describing, but as you noted it goes away if you goose the gas a bit, so I've just figured the computer isn't downshifting enough for my taste.

I can't comment to much on the harsh engagement, all I can really suggest is to check the condition of the transmission fluid.

As far as it not going into D, I do have a tip on how to replicate it! Find a parking garage and park in a spot on an incline. Then put the car in reverse and reverse out like normal. Then turn the wheel all the way and shift into D, let of the brake and mash the gas (not so you run off the garage). This will cause the problem to show it's ugly head and not go anywhere.

jocho910 01-26-2011 02:55 PM

Quote:

Originally Posted by Crasher1339 (Post 5600254)
I have a transmission problem, although sounds different than yours. Periodically if I accelerate after nearly stopping (i.e. at a yield, or at a stop sign), the trannie kicks in with a bang, then drives fine. Also, I have twice had the unnerving experience of putting it into drive, only to have the transmission not do anything (the engine just revs, or you can only go in reverse) except set off a transmission malfunction alert. Fortunately after turning the car off and then starting it up again it works fine, which makes me think it's a computer issue. I brought it in to have BMW look at it, and of course neither problem occurred during the test drive with the mechanic, and nothing showed up on the fault codes. Go figure.

I had the exact same thing happen to my 2006 750i. I would put it into D and it would do nothing. I was getting Transmission Fault messages and the thing just was driving me nuts. I brought it in to BMW service and they are replacing the Transmission Sleeve, refilling it with Transmission fluid and resetting the computer. All this has been done under warranty. I will be picking the car up in a few days and I'll report back as to how its running.

Vecoplan 01-26-2011 03:00 PM

Quote:

Originally Posted by jocho910 (Post 5802670)
I had the exact same thing happen to my 2006 750i. I would put it into D and it would do nothing. I was getting Transmission Fault messages and the thing just was driving me nuts. I brought it in to BMW service and they are replacing the Transmission Sleeve, refilling it with Transmission fluid and resetting the computer. All this has been done under warranty. I will be picking the car up in a few days and I'll report back as to how its running.

I agree here. What I would tell you to do is have the BMW dealership upgrade the software on the car to the most current version- it is amazing what difference that will make. When you are ready to rebuild that transmission shoot me a PM- I have a much better solution to that which the dealership will offer you and which will cost you about the same and an OEM rebuild.

u2spyplane 02-08-2011 08:29 PM

I have the same issue as the original tread. It pulls and tugs slightly as I accelerate gradually. I get a "limited transmission failure" indication. I took the car to a BMW 3rd party specilaist and told me that it could be the torque converter or the tranny. They said if you do the torque converter you could be wasting your money. They also said they don't rebuild tranny's for these beamers. $7600 out the door for new tranny job.

The dealership wants $180 to do the software uopgrade. What is the "gas pedal trick as mentioned by CSMEANCE???? Honestly, I don't want to pay for a new tranny if I don't have to. The 2003 745LI car with 125,000 miles is only worth around $20,000 for crying out loud. Help? anyone?

jbhoot 02-08-2011 09:35 PM

What csmenace is talking about is to reset the transmission adaption. Basically, the transmission adapts to your driving style and this trick resets it. Here's how to do it

With the car off get in, don't put your foot on the brake.
Press the start button once.
Press and hold down the accelerator pedal for 25 seconds.
Start as usual.

Have you ever changed your transmission fluid? or even the infamous sealing sleeve?

u2spyplane 02-08-2011 09:53 PM

gotcha! thanks. umm yes i replaced it 3 months ago but never the sleeve.

beamin760li 02-08-2011 10:21 PM

i was experiencing the same problems and had the mechatronic sealing sleeve replaced also the adapter replaced and ignition coils replaced...problem fixed and no tranny faults driving smoothly now

Hotboimob 02-09-2011 02:45 PM

I just had my mechatronic sealing sleeve replaced too when i was getting P,D,N D1,D2 faults. basically my 7 wouldn't go into D or R it just stayed in P. The dealer replaced this sleeve,after I had it towed to them:( and she's ridin again but its my first day,i'll post back if the problem comes back.:thumbup:

kpeterson 02-09-2011 03:01 PM

has anyone heard of a egs code 4f4b - gear malfunction code?
my 2002 745i is now showing that code and wondering if it is a blown trans when it drives. this is silly.
what is the costof trans from the dealer?
ken

u2spyplane 02-09-2011 03:23 PM

above $7500. i had a BMW auto shop wuote me a out the door price. they don't rebuild them. they drop the old and slap a new factory spec one in. I would say between $8000 to $10,000. just a guess though. Now, that is silly!

bobwardjr 02-09-2011 05:21 PM

tranny cost
 
they replaced mine under warranty and the bill was about 12k new tranny labor and 1800 bucks for fluid

u2spyplane 02-09-2011 05:56 PM

Quote:

Originally Posted by jbhoot (Post 5835202)
What csmenace is talking about is to reset the transmission adaption. Basically, the transmission adapts to your driving style and this trick resets it. Here's how to do it

With the car off get in, don't put your foot on the brake.
Press the start button once.
Press and hold down the accelerator pedal for 25 seconds.
Start as usual.

Have you ever changed your transmission fluid? or even the infamous sealing sleeve?

Thanks. I performed the gas pedal trick and looks like the car did make some adjustments and drives better but I'm not totally convinced the pull and tug is all gone. It might be my imagination. Maybe the mechatronic sleeve will do the final trick? How much is it? Can I do that work myself or is it super complicated? I did change the tranny fluid recently.

csmeance 02-09-2011 07:17 PM

Quote:

Originally Posted by u2spyplane (Post 5837349)
Thanks. I performed the gas pedal trick and looks like the car did make some adjustments and drives better but I'm not totally convinced the pull and tug is all gone. It might be my imagination. Maybe the mechatronic sleeve will do the final trick? How much is it? Can I do that work myself or is it super complicated? I did change the tranny fluid recently.

Your problem is probably because of this:
Quote:

Originally Posted by u2spyplane (Post 5367443)
Well I wanted to share my experience on my first ever 2003 745LI transmission Oil Change (no pan and filter)

Step 1) went to Pelicanparts.com to buy qty (6) $17/liters versus paying $50/liter at dealer

Step 2) removed pan covering tranny plug and drained oil into exactly 4 liter container

step 3) look desperately for 1/2 hr trying to find the dip stick so I can refill fluid but much to my surprise - there isn't one. hence, "lifetime fluid" does not require oil change which is BS

step 4) looked online for tranny oil refill port hole but couldn't find it. Called dealer after 1/2hr wait and ask "...where in the hell do you put the new oil in?" He stated "...it's located just above the drain hole on one of the sides of the tranny"

step 5) removed refill port hole located on the tranny side and it was factory torqued to 1 million damn F'in Lbs/sq in. has to use an extension on my rachet while lieing underneath my car that was propped up on rhino ramps onthe front end tires. jammed my knuckles on a upwarde motion as it released spontaneously.

step 6) got my dad's suction pump with 12in transparent plastic hose to suck out 1 liter at a time and pump it into the port hole

step 7) i only managed to put in 2 liters out of the 4 i took out before it spewed all over my arm and onto my Dad's driveway ( he was pissed)

step 8) brought car off ramps and put on ramp on side of port hole (passenger's side) and jacked up the back end too. car is leaning at 15 to 20 degree incline with both tires in air so I can fit more fluid. put in another liter before it spewed again. dropped a couple of "F" bombs

step 9) put plug back in and road the car around the block twice to get fluid mixed in the tranny parts and make room for more. one more liter to go!!!

step 10) put car back on its side and managed to put in 1/4 of a liter.

step 11) put plug back in and drain cover too. Done! took me 3.5 hrs to do this and saved myself $500.

WTF? How is it that I took out 4 liters and can only put in 3.25? Why did the delaer guy tell me it takes 6 liters after I told him I'm not draing the torque converter - just the tranny fluid?

That almost 1 litre short is the issue! My car had the leaking gasket, and with 1/2 liter low it was shifting slightly rough and was throwing faults. I think that is a big part of why your trans isn't functioning. The way to make sure it gets all it's fluid back is to quickly pump it in with the car running. Read the DIY and it'll help out more.

u2spyplane 02-09-2011 07:21 PM

wow! u r good. how did you find my old post? I sure hope you are right. not sure where i can find DIY but someone put in my post how to do it. I guess I can follow it.You are a life saver Mr. CS. Thanks bud! :-)

u2spyplane 02-09-2011 07:23 PM

oh did i mention that i have a "check engine soon" light that came on yesterday? I don't one of those fault readers either. damn. what else can go wrong?

csmeance 02-09-2011 07:38 PM

Quote:

Originally Posted by u2spyplane (Post 5837569)
wow! u r good. how did you find my old post? I sure hope you are right. not sure where i can find DIY but someone put in my post how to do it. I guess I can follow it.You are a life saver Mr. CS. Thanks bud! :-)

The find post button because you had said that you posted in a thread and I didn't know which one!

Here's the link to the DIY, I hope its the problem because it makes sense, low fluid means that it can't lubricate itself properly for operation thus the jerkiness from the metal on metal contact or whatever surfaces there are!

http://bimmerfest.com/forums/showthread.php?t=502985

Quote:

Originally Posted by u2spyplane (Post 5837574)
oh did i mention that i have a "check engine soon" light that came on yesterday? I don't one of those fault readers either. damn. what else can go wrong?

Check engine soon light? Do you mean the Yellow Check engine light? How many miles are on your car exactly? Did you get any sort of message on the I-drive? Go to Vehicle info, then click vehicle check and it should bring up the CEL or fault with a generic idea of what it is. Go to autozone and they can get the code for free!

I'm thinking its the O2 sensors that are probably tripping the code since they are supposed to be replaced around 100K miles.

u2spyplane 02-09-2011 07:55 PM

yes the yellow check engine light! I ahve 126,000 miles. I only see Brake fluid shown in red which I haven't flushed. no CEL or anyhting else but a bunch of green lit status on oil, coolant, etc.

csmeance 02-09-2011 08:41 PM

Quote:

Originally Posted by u2spyplane (Post 5837641)
yes the yellow check engine light! I ahve 126,000 miles. I only see Brake fluid shown in red which I haven't flushed. no CEL or anyhting else but a bunch of green lit status on oil, coolant, etc.

not that one, it's a picture of a car on a lift or it says CHECK! It should say CHECK OK if everything is fine!

BMWbaffoon 03-03-2011 06:50 PM

Transmission Issues
 
I was reading through the tranny issues looking for clues and came upon this. My symtoms are same as Crash (not Myeagleputt). I can avoid the "bang" shift into 1st gear by stopping completely for a full beat, then I'll feel the shift into 1st. A near stop or "California" stop will cause a jolt. All upshifts are smooth and fluid under normal or heavy acceleration. Only driving concern is if I back off the accelerator after a couple seconds of heavy throttle, then get back on it: the transmission doesn't decide which gear it wants until you're on the throttle, and "bang", it slams into the gear it wants (it's the correct gear, but the jolt is harsh).

I also get the occaissional "fault" when it won't go into park or into drive when the car is stopped, but just like Crash's car, I turn off and restart the car and it resets itself.

The car is at the dealership now and I'm awaiting the verdict. The SA is pounding away on my extended warranty company (Consumer Direct Warranty Services), whose performance has been abyssmal. I will share the results for those of you with similar issues. As I see your posts (Myeagleputt and Crash) are approx. 6 mos. old, are issues now resolved? how? and how much $?? thanks!

payrollthedon 03-03-2011 07:07 PM

Quote:

Originally Posted by Crasher1339 (Post 5600254)
I have a transmission problem, although sounds different than yours. Periodically if I accelerate after nearly stopping (i.e. at a yield, or at a stop sign), the trannie kicks in with a bang, then drives fine. Also, I have twice had the unnerving experience of putting it into drive, only to have the transmission not do anything (the engine just revs, or you can only go in reverse) except set off a transmission malfunction alert. Fortunately after turning the car off and then starting it up again it works fine, which makes me think it's a computer issue. I brought it in to have BMW look at it, and of course neither problem occurred during the test drive with the mechanic, and nothing showed up on the fault codes. Go figure.

I think I might also sometimes experience what you're describing, but as you noted it goes away if you goose the gas a bit, so I've just figured the computer isn't downshifting enough for my taste.

i have same issuse for what ive read and been told it could be clutch dust or other issuse
only way to tell is to drop ur tranny and have it checked or low fluid getting mine fixed next week will post

payrollthedon 03-03-2011 07:20 PM

Quote:

Originally Posted by u2spyplane (Post 5836980)
above $7500. i had a BMW auto shop wuote me a out the door price. they don't rebuild them. they drop the old and slap a new factory spec one in. I would say between $8000 to $10,000. just a guess though. Now, that is silly!

they do rebuiled this trannys who ever told u that just wants u to buy the new tranny
for 8gs rather then pay 2600 for a rebuiled

jrconsejerotoo 10-20-2012 02:10 AM

yesterday I opened the door and even pushed the button to park, I saw it go into park!
I walked over about 8 feet to key in my garage code when out of the corner of my eye i catch the car coming at me and my 4 year old. Car eventually stopped when it crunched my grge door.
I get in the car and the gear symbol is lit...car is in Neutral and transmission failure code is on! Now it goes into gear for a few seconds then automatically goes into neutral...so I can hit the gas and start moving before it clunks and disengages . I'm talking about the parking shift position not the parking brake..consider this..none of my regular analog automatic transmission vehicles magically change gears from park to neutral even if the transmission does fail. CAR SHOULD NEVER UNDER ANY CIRCUMSTANCES GO FROM PARK TO NEUTRAL ON ITS OWN! One day you'll forget the parking brake and you'll find your car ghost riding without you...and hopefully it doesn't kill someone or destroy property.
I would like to know, since it happened out of the blue without warning...If anyone knows how to clear the fault to replicate it? I'm afraid to disconnect the battery since that ill also erase my key fob? So I been told... Apparently, NHTSA has had several complaints and are investigating this...but in the meantime I'm dead in the water and I refuse to pay $10k for a new transmission on a car with this few miles without an explanation at least of why someone would be stupid enough to make this a possible default setting.


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