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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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Old 12-03-2012, 05:04 AM
BMW-530-i BMW-530-i is offline
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Location: Dubai
 
Join Date: Dec 2012
Posts: 2
Mein Auto: BMW 530i
Exclamation Shaking and rough driving after hard acceleration

I drive a BMW 530I (E60) model 2006. It has automatic transmission with steptronic.

The problem I have is that when I accelerate hard on automatic (gear changes happening above 4000 - 5000 RPM) I get lots of power but when I lift off, the car quickly and sequentially up shifts to the appropriate gear and then shudders a lot upon my pressing the accelerator. It feels like quite a loss of power at that time. If I do keep it floored, the shuddering in less at higher speeds. This continues for a few minutes and then goes away, or goes away if I immediately stop, switch off for a minutes and then restart the car.

If I do not accelerate hard, there is no problem under gentle acceleration (shifting automatically at about 3000 RPM).

The issue first appeared about 6 months back and the dealer told me that they would change the spark plugs and take it from there. The spark plugs were changed but the problem reappeared 2 months afterwards (very intermittently) and have not been back as I did not know how to reproduce the issue till about 2 weeks ago, i.e. now I am sure it will shudder when pushed hard.

Any advice would be welcome as to what could possibly cause something like this, as I wanted to be a bit more knowledgeable before I go back to the dealer.

Cringing at the thought of getting a large repair bill, so I really want to have enough knowledge not to be gypped.

Thanks in advance.
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Old 12-03-2012, 06:47 AM
BMW-530-i BMW-530-i is offline
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Location: Dubai
 
Join Date: Dec 2012
Posts: 2
Mein Auto: BMW 530i
Update:

I tried the "25s gas pedal press trick" that I found on the forums. It was supposed to help with jerky transmission shifting, but I thought it wouldn't harm anything to see what it does. The theory was that this trick resets the transmission control and makes shifting smoother

I drove the car after that, and accelerated three or four times up to 5000 plus RPM, and wonder of wonders after I lifted off, the car up shifted as it should, and when I floored it again there was no shuddering

I do not know whether it's a permanent fix, but if the shuddering was only due to the transmission wondering which gear to upshift to upon second acceleration my problems may be over.

Fingers crossed.
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