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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #76  
Old 04-28-2012, 06:12 PM
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Blubaron79 Blubaron79 is offline
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Quote:
Originally Posted by Ilovemycar View Post
Blubaron, may I ask how much this cost, and the time it took? Thanks, PM is fine too, I was just curious . . .
It can run anywhere from $500-$700. My dealer did mine for free due to all of the other problems my car has had with the fuel system. It took them 5 hours...
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  #77  
Old 06-19-2012, 11:50 AM
jburke4689 jburke4689 is offline
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Well, my problem is back. 5,000 miles since the repair. Same symptoms, no codes. I will let you all know how it goes. Doing the FI cleaner now. If that doesn't work, I will inspect the intakes. Then back to ths charge air seals. Wish me luck.
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  #78  
Old 06-29-2012, 01:23 PM
fishies1 fishies1 is offline
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Mein Auto: 2008 335xi
Engine Shuddering in 335xi

I'm having the EXACT same issue as originally described in this thread. Hesitation / shuddering at @2,500 rpm in 4th through 6th gears under heavy acceleration. 2008 335xi 6MT, 45,000 miles. The dealer has seen it four times for this issue: performed recall, changed spark plugs / injectors, you name it, it hasn't fixed the issue. After a ride along w/ a service tech a few months ago they observed the problem and changed the injectors / plugs and it helped for a few months but the problem is back.
I'll give the Techron a try and see if that helps. If not, maybe I'll talk to the dealer about the walnut blasting. I purchased the car CPO 18 months ago so maybe the CPO warranty would cover the issue.
Love the forum - this has been helpful as it confirms I'm not crazy and that others have also struggled w/ their dealerships.

Last edited by fishies1; 06-29-2012 at 01:34 PM.
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  #79  
Old 09-27-2012, 07:04 PM
M106191 M106191 is offline
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Mein Auto: 2004 BMW 300 CI
Help

I see alot of discussion about the same issue BUT WHAT IS THE ROOT CAUSE AND FIX? You guys posted these issues a while ago so the issue must be fixed now? What was the correct fix?

I have a 2007 BMW 335 and it is doing exactly what you all describe.. sudden jerking in 3rd gear right around 3000 rpm when hard acceleration is taking place. If you depress the accelerator very lightly no issues..


and i have run thru 2 bottle of TECHRON (2 gas fill ups in a row) and still have the issue..

Last edited by M106191; 09-27-2012 at 07:06 PM.
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  #80  
Old 09-27-2012, 09:13 PM
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Orient330iNYC Orient330iNYC is offline
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Quote:
Originally Posted by M106191 View Post
I see alot of discussion about the same issue BUT WHAT IS THE ROOT CAUSE AND FIX? You guys posted these issues a while ago so the issue must be fixed now? What was the correct fix?

I have a 2007 BMW 335 and it is doing exactly what you all describe.. sudden jerking in 3rd gear right around 3000 rpm when hard acceleration is taking place. If you depress the accelerator very lightly no issues..


and i have run thru 2 bottle of TECHRON (2 gas fill ups in a row) and still have the issue..
techron will NOT clean the intake valves on a DI engine. the gasoline (and techron) are injected directly into the cylinder, bypassing the valves. the only way to really clean the valves is by mechanically or chemically cleaning the valves from the intake side. this is the walnut blasting that the other posts talk about. you can run techron through a DI engine all day and it will not touch the carbon on the intake valves.
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Past: 2001 330i ZSP/ZPP/Step
Past: 2004 S60R 6MT Sport
Past: 2007 335i 6MT ZSP/ZCW/322/655
Past: 2010 335xi ZMP/ZCW/ZPP/PPK/PE
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Last edited by Orient330iNYC; 09-27-2012 at 09:17 PM.
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  #81  
Old 09-28-2012, 08:03 AM
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Blubaron79 Blubaron79 is offline
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Walnut blasting was the only way to fix mine.
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  #82  
Old 09-23-2014, 06:42 PM
fadi5284 fadi5284 is offline
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Mein Auto: 2010 BMW 135
Quote:
Originally Posted by jburke4689 View Post
I have a 335i (8/2007) production 6sp MT. I noticed a hesitation and roughness between 2500 and 3000 rpm under acceleration. There are no SES lights or any other symptoms. The car would accelerate through that range well enough but it was very annoying. It is particularly noticable in 4th through 6th gear. In 1st through 3rd gear the car accelerated too rapily through the rpm range to notice the roughness unless you are looking for it. My car has had the HPFP and all injectors replaced under recall and I paid for new spark plugs about a year ago and it currently has 67K miles on it. Otherwise the car is great.

I had the car scanned and there is a single code stored, (2AAF, Fuel Pump Plausibility). I took it to the dealer and they confirmed my symptoms (I did not tell them that I knew about the 2AAF and the TSB) and said I need a new low pressure fuel pump, the one in tank. I asked my service advisor if they were sure. "Why is it only in that rpm range?" He said the low pressure fuel pump is variable delivery and at that rpm delivery, that is the issue. I said OK but "fuel delivery at 2500-3000 rpm is different at each gear and varies with load on the engine." He said "we are sure that is the problem. I said "OK, do the repair." By the way, the BMW service bulletin says "do not replace low pressure components for 2AAF without testing a lot of other components first."

I picked up the car after paying my $700 and started driving it home. After warm up, I started accelerating and the car was still doing the exact same thing. I immediately brought the car back. The dealer has had the car seven days now and just told me today that they have opened a PUMA case with BMWNA.

I am reserving my opinion of this dealer until I have the problem resolved. Everyone can make a mistake. I will update the post as soon as I have resolution.

Has anyone experienced the same thing?

Thank you for your post your I'm currently experiencing the same issue on my 2010 135.
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  #83  
Old 09-23-2014, 06:46 PM
fadi5284 fadi5284 is offline
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Mein Auto: 2010 BMW 135
Quote:
Originally Posted by Alpine300ZHP View Post
At the OP mileage I suspect that you guys have a combination of carbon buildup on the intake valves and some injector clogging. I have owned 3 N54 engines so I am somewhat of an armchair expert on this motor. I suggest you guys do the following:

1) Fill up with Shell 93 octane or Chevron 93 octane

2) Buy 4 bottles of BMW fuel system cleaner plus (just wait and let me finish)

3) At the first fill up do this: a) put a bottle of fuel system cleaner plus in before filling up the car b) warm up the engine at low RPM and speeds for 20 minutes c) take car onto the interstate and do 70 mph in 3rd gear making sure you are turning at least 4k RPM. d) Do the drive for 30 minutes and then shift to 6th and let the car cool down.

4) Two times a week for the next two-four weeks repeat number three making sure that you are running Shell or Chevron and using a bottle of fuel system cleaner in each tankful until all 4 bottles are gone.

I can almost guarantee your hesitation problems will be gone before or by the time all of the fuel system cleaner plus is used up. Once you have corrected the problem maintain the engine by doing my suggestion once a month. This is how I kept my N54's running good.....

I will give this a shot. I recently had the 5th coil replaced on my 2010 135, the car drove ok for about 3 weeks then it began to hesitate again and threw another code. Thinking that it could have been the same issue as before and being so close together I decided to replace the spark plugs. It drives good now except that it rides a little rough between 2500-4000 rpm on heavy loading.
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  #84  
Old 09-24-2014, 06:59 AM
ItsaGoose ItsaGoose is offline
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Location: Seattle, WA
 
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Mein Auto: 2010 335i Coupe
Quote:
Originally Posted by jburke4689 View Post
Well, my problem is back. 5,000 miles since the repair. Same symptoms, no codes. I will let you all know how it goes. Doing the FI cleaner now. If that doesn't work, I will inspect the intakes. Then back to ths charge air seals. Wish me luck.

What happened with your repair?


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