DIY: Do It Yourself Share all your DIY experiences here. Ask how-to questions also!

Uneven Acceleration

Thread Tools
 
Search this Thread
 
Old 08-21-2009, 05:52 PM
  #11  
Contributors
 
cobradav's Avatar
 
Join Date: Jun 2004
Location: FLA - East Coast, USA
Posts: 3,618
Likes: 0
Received 0 Likes on 0 Posts
My Ride: (USA) 645Ci, Silver Gray, Chateau, Cold Weather PKG, Premium Sound PKG, Sport PKG, Step, NAV [Std Equip in 645], HUD, Satellite (SIRIUS) Radio, Aux Input, Bluetooth enabled using iPhone 3GS w/ adapter cradle - Build date - 01/05, Baby delivered 2/24/05
Default

Originally Posted by Spaceroach' post='984831' date='Aug 21 2009, 04:47 PM
I will try the injector cleaner - what do you recommend? I have read here that some like techron.
Techron is what BMW recommends and sells under their own P/N
Old 08-21-2009, 06:23 PM
  #12  
Contributors
 
craigm1841's Avatar
 
Join Date: Dec 2008
Posts: 4,656
Likes: 0
Received 0 Likes on 0 Posts
Default

maybe it is you. maybe you have restless leg syndrome.
Old 08-23-2009, 12:54 PM
  #13  
Members
Thread Starter
 
Spaceroach's Avatar
 
Join Date: Jan 2008
Posts: 36
Likes: 0
Received 0 Likes on 0 Posts
Default

OK used the techron- so far so good.

keeping my fingers crossed!
Old 08-26-2009, 11:27 AM
  #14  
Members
Thread Starter
 
Spaceroach's Avatar
 
Join Date: Jan 2008
Posts: 36
Likes: 0
Received 0 Likes on 0 Posts
Default

5 days after Techron and so far so good! looks like this may have solved my problem!
Old 08-26-2009, 12:08 PM
  #15  
Contributors
 
rrnag30's Avatar
 
Join Date: Sep 2008
Location: Round Rock, TX
Posts: 407
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 05' 545i
Default

read this thread

https://5series.net/forums/index.php...smission+sieze
Old 08-26-2009, 07:44 PM
  #16  
Contributors
 
DRANGED's Avatar
 
Join Date: Aug 2007
Location: MPLS, USA
Posts: 5,765
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 10 Honda Fit Sport, 10 Honda Pilot Touring
Default

Originally Posted by rrnag30' post='989491' date='Aug 26 2009, 03:08 PM
Bad link. Please repost.
Old 08-26-2009, 08:10 PM
  #17  
Members
 
Jeff 330CI's Avatar
 
Join Date: Dec 2007
Location: T.O.
Posts: 31
Likes: 0
Received 0 Likes on 0 Posts
My Ride: 330CI & 545I
Default

Do you notice the tach move? If not I would say transmission, I just had the same problem with my 545 so BMW changed my transmission.
Old 08-27-2009, 10:30 AM
  #18  
Members
Thread Starter
 
Spaceroach's Avatar
 
Join Date: Jan 2008
Posts: 36
Likes: 0
Received 0 Likes on 0 Posts
Default

Yea Jeff - the tach would jump. it was definitely an ignition/fuel delivery system type issue. Misfire kind of feeling. I could even replicate it putting the shift knob to the "manual" setting and leaving it in a gear.

With the new plugs and two applications of techron, it is running better than ever for now!
Old 09-24-2009, 08:04 AM
  #19  
Members
Thread Starter
 
Spaceroach's Avatar
 
Join Date: Jan 2008
Posts: 36
Likes: 0
Received 0 Likes on 0 Posts
Default

FYI - after the techron and plug replacement, this problem has resurfaced.

I am taking it back to the dealer tomorrow. Hopefully they can replicate it or suggest something to try and correct it.

I will keep you all informed.
Old 09-24-2009, 10:50 AM
  #20  
Members
 
chris f's Avatar
 
Join Date: Aug 2008
Location: Kent, England.
Posts: 189
Likes: 0
Received 0 Likes on 0 Posts
Default

I am getting the same issue, although mine is a 3.0 diesel. Its always between 1-2k rpm slight engine load.


Quick Reply: Uneven Acceleration



All times are GMT -8. The time now is 07:28 AM.