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Annoying Jolt / Slam when accelerating Annoying Jolt / Slam when accelerating
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  #21  
Old 08-08-2016, 03:01 PM
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Originally Posted by mam4.6 View Post
Tiag, what kind of time did you get into replacing the chain?

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I had to put around 10hrs into the job.

The truck was laid up for over a week waiting for parts.

I like to tear down and inspect everything prior to ordering ANYTHING. This saves me from the temptation of throwing it back together with new parts on hand and suspect parts that SHOULD be replaced.
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  #22  
Old 08-08-2016, 03:29 PM
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Quote:
Originally Posted by TiAgX5 View Post
I had to put around 10hrs into the job.

The truck was laid up for over a week waiting for parts.

I like to tear down and inspect everything prior to ordering ANYTHING. This saves me from the temptation of throwing it back together with new parts on hand and suspect parts that SHOULD be replaced.
Definitely the best way to go at it!! Did you replace anything other than the chain?

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  #23  
Old 08-08-2016, 05:15 PM
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Originally Posted by mam4.6 View Post
Definitely the best way to go at it!! Did you replace anything other than the chain?

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The front flex disc had some minor cracking & the front driveshaft flange seal (it is pressed in from the outside of the housing). It's near impossible to slide the front shaft into the seals feather edge without damage.
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  #24  
Old 12-26-2016, 08:03 PM
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I've been having this same issue but no jolting just loss of power and car will stall at idle.

It'll then run perfect for a long time, it is very random.

I'm pretty sure it's my Mass Air Flow but I can't disconnect it. Almost looks like a previous owner put a sealant on the connector. Does anyone know where I can buy the connector just in case it breaks when I do get it off?



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  #25  
Old 12-27-2016, 12:22 AM
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Originally Posted by upallnight View Post
I guess when BMW boast about their adaptive transmission, people just assume that the transmission will adapt to their driving style and not the other way where you need to adapt to the quirks of the transmission.
Regarding the OP's problem I agree with upallnight.
Just turn the key on to the position just before you start the engine
press the accelerator for 30 full seconds and that's it. It's not an
engine mount, or Transmission mount problem. Iv'e done this
every 6 months for the last ten years with success
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Last edited by Quicksilver; 12-27-2016 at 12:29 AM.
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  #26  
Old 12-28-2016, 01:20 AM
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  #27  
Old 12-28-2016, 01:21 AM
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Quote:
Originally Posted by Quicksilver View Post
Regarding the OP's problem I agree with upallnight.
Just turn the key on to the position just before you start the engine
press the accelerator for 30 full seconds and that's it. It's not an
engine mount, or Transmission mount problem. Iv'e done this
every 6 months for the last ten years with success
myth or fact....

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Sometimes its a rough ride, sometimes its smooth motorin'.
Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves.
BUT at the end of the day, she loves it when I am inside her.

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  #28  
Old 12-28-2016, 07:51 AM
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Originally Posted by OrangeFurious View Post
FWIW, both my 4.4 and 4.8is have done this regularly in the time I've owned them. It's annoying as hell and occasionally feels like being rear-ended. I had the 4.4 pretty heavily investigated by an indie shop (Signature in Kirkland WA) and they couldn't find anything "wrong" with it. Adjusting my throttle technique eliminated the issue.
My 3.0d does this too, not often but does it...and yes 1st time thought i was rear ended...
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