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-   -   2002 4.6is feel like rear ended when stoping (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/71476-2002-4-6is-feel-like-rear-ended-when-stoping.html)

customattitude 03-22-2010 06:11 PM
2002 4.6is feel like rear ended when stoping
 
hello my 2002 4.6is feels great but sometimes not everytime when i come to a stop it feels like i get rear ended any imput plz i just bought it. also has rough starts????

tomcat 03-22-2010 06:40 PM
The "rear ended", lunging, or lurching topic has been discussed many times. I believe it was usually tranny software related, but try searching since I could be telling lies.

Scott

customattitude 03-22-2010 07:22 PM
yes i have been searching and i have read that but for 2004+ years mine is a 2002 could it still be a software update?

tomcat 03-22-2010 07:52 PM
Well, here is an '03 with it. I suppose first order of business would be to reset the transmission memory then drive gingerly. Instructions here.

Scott

rares 03-22-2010 08:22 PM
I had the same problem for the last 2 years untill 2 day ago when I was able fix it myself after spending one month and a half all together in shops,dealers and over $ 900 .They all are tech but without the computers ...the are just a bunch of idiots.Last tech told me that it will cost me $8000 to have the trans replaced.Anyway the problem was w/ the idle speed....when the engine was cold ...no problem the rpm is a litle bit higher but w/ engine warm ...at every stop I was feeling the " rear ended" because the throtle control (inside), before intake mainfold had a lot of gease and dust deposits and the engine couldnt breath at low rpm.The dust got there because they were really careless and slopy when they replace the air filter .Need more info I can help

customattitude 03-23-2010 12:09 AM
ok so how did you figure out your problem when they hooked it up to a computer?? did it throw codes

jst2878 03-23-2010 12:14 AM
I have the same. Could it be heat related? I'm not to sure, but I wish I can solve this problem before I sell her. Maybe then, I will keep her longer

chilliwilli 03-23-2010 12:32 AM
Age old issue...discussed in length on this forum. No permanent fix for 4.6iS...something you'll have to live with.

customattitude 03-23-2010 12:43 AM
i have tryed doing the transmission reset..and didnt help it still does it not everytime but it does it...hmmm i read so many ansewers on here anyone with this issue who has had it resolve??

zimdude 03-23-2010 12:58 AM
I had the same thing with my 05 4.4i

1. Car shifting strangely when I am coming to a stop (see #3 & #4)
2. Experiencing a "kick" when going uphill or accelerating off sleeping policemen, or accelerating from a stop street not from a complete stop (engine revs up a little with no motion proceeded by a 'bang" and a very harsh jerk and then motion.)
3. Car lurches forward from 2nd *to 1st and then again from 5th to 6th gear
4. Its as if the transmission is free wheeling before it finds a gear
5. Occasionally there is a low rumbling/vibrating/humming noise when at full acceleration experienced when overtaking on the freeway, 65 mph onwards when getting close to the redline.
6. When in slow moving traffic (25/35mph / 1,500 rpm / 40mpg) the transmission jerks approx every 15 seconds. Its feels like the brakes are being stabbed intermittently. None of the needles indicate any change whatsoever when this happens.

I took it into my dealership and they replaced the gearbox (remanufactured) free of charge. BMW North Scottsdale is AZ are the absolute best to deal with. I was just out of warranty and they had replaced he transfer case a couple of months prior so there was a sequence of event leading up the the gearbox replacement. They had tried everything including software updates before finally replacing.

I had done a tonne of research and I believe the 05 in particular suffered from this. Changing the gearbox erradicated all my problems

X52002 03-23-2010 11:01 AM
Good to know....

rares 03-23-2010 05:43 PM
no error codes ...everything fine .......but for just sec when u relese the gas pedal ...there was no enough air at the idle for the engine to breathe but throtle control valve adjust itself right away and the computer doesnt take the "faulty".Trust me on this one ....clean inside the throtle control unit.The "rear end " feeling when stoping.... cost me the transfer case and the front drive shaft

BlackX54.4i 04-01-2010 12:50 AM
My '05 4.4i does that as well when coming to a stop. Took it to my a dealer twice now and they adjusted the idle speed which helped some, but hasn't completely erased the problem.

So transfer case and front drive shaft?

Looks like I'll be printing this thread off and taking it in :stickpoke

cimbro 04-01-2010 05:25 AM
Quote:
Originally Posted by tomcat (Post 725166)
Well, here is an '03 with it. I suppose first order of business would be to reset the transmission memory then drive gingerly. Instructions here.

Scott
In another post, I saw the instruction for it disconnecting the battery and so resetting the memory for at least 12 hours.

I will try both the solution, than I will let you know.

I have the same problems!! on 01. 4.4

Bye

sunny5280 04-01-2010 10:21 AM
Quote:
Originally Posted by BlackX54.4i (Post 728239)
My '05 4.4i does that as well when coming to a stop. Took it to my a dealer twice now and they adjusted the idle speed which helped some, but hasn't completely erased the problem.

So transfer case and front drive shaft?

Looks like I'll be printing this thread off and taking it in :stickpoke
From what I've read of the problem it sounds like an issue I had with my 2000 4.4i. It ended up being the transmission valve body. Once replaced the issue went away. Cost of the part from BMW is $1,800. My mechanic got it directly from the manufacturer for $550.

cimbro 04-01-2010 11:15 AM
Quote:
Originally Posted by sunny5280 (Post 728325)
From what I've read of the problem it sounds like an issue I had with my 2000 4.4i. It ended up being the transmission valve body. Once replaced the issue went away. Cost of the part from BMW is $1,800. My mechanic got it directly from the manufacturer for $550.
What is exactly this "valve body" ? Is it in the torque convertor?

sunny5280 04-01-2010 11:25 AM
Quote:
Originally Posted by cimbro (Post 728348)
What is exactly this "valve body" ? Is it in the torque convertor?
No, it's not in the torque convertor. The BMW part number is 24347521639. You can see it at:

RealOEM.com BMW E53 X5 4.4i A5S440Z CONTROL VALVE ASSY

zeroboot 04-01-2010 04:11 PM
Quote:
Originally Posted by zimdude (Post 725261)
I had the same thing with my 05 4.4i

1. Car shifting strangely when I am coming to a stop (see #3 & #4)
2. Experiencing a "kick" when going uphill or accelerating off sleeping policemen, or accelerating from a stop street not from a complete stop (engine revs up a little with no motion proceeded by a 'bang" and a very harsh jerk and then motion.)
3. Car lurches forward from 2nd *to 1st and then again from 5th to 6th gear
4. Its as if the transmission is free wheeling before it finds a gear
5. Occasionally there is a low rumbling/vibrating/humming noise when at full acceleration experienced when overtaking on the freeway, 65 mph onwards when getting close to the redline.
6. When in slow moving traffic (25/35mph / 1,500 rpm / 40mpg) the transmission jerks approx every 15 seconds. Its feels like the brakes are being stabbed intermittently. None of the needles indicate any change whatsoever when this happens.

I took it into my dealership and they replaced the gearbox (remanufactured) free of charge. BMW North Scottsdale is AZ are the absolute best to deal with. I was just out of warranty and they had replaced he transfer case a couple of months prior so there was a sequence of event leading up the the gearbox replacement. They had tried everything including software updates before finally replacing.

I had done a tonne of research and I believe the 05 in particular suffered from this. Changing the gearbox erradicated all my problems
Is the gearbox covered under CPO? I have an '05 4.4 with the same problem and thinking I should bring it in.

Ahmed303 04-01-2010 04:23 PM
Quote:
Originally Posted by zeroboot (Post 728454)
Is the gearbox covered under CPO? I have an '05 4.4 with the same problem and thinking I should bring it in.
Should be. Part of the Powertrain. Check your CPO Contract.

zigzag 04-02-2010 07:45 AM
Who"s manufacturer? And how we can get it directly? Can you ask your mechanic?

tomcat 04-02-2010 01:17 PM
Quote:
Originally Posted by zigzag (Post 728627)
Who"s manufacturer? And how we can get it directly? Can you ask your mechanic?
ZF here is a part manual

Scott

sunny5280 04-02-2010 02:19 PM
Quote:
Originally Posted by zigzag (Post 728627)
Who"s manufacturer? And how we can get it directly? Can you ask your mechanic?
Zigzag, is this question intended for me? If so I'll check with him this afternoon.

ayagutak 04-12-2010 01:40 PM
i have read it all lol so whats the fix for rear end junking, just need the fix for this problem if there is any


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