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      07-17-2013, 07:21 PM   #1
Chrisred
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Engine/drivetrain issue??

While cruising at about 2000rpm on steady throttle, I noticed that the car does a tad of a jump. Feels like one would tap on throttle every 2 sec. The rpm's don't go up or down. Any ideas??

Recently changed serpentine belt and Vanos solenoids. No codes on BT tool. It's an xi. Transfer case was replaced two years ago.
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      08-08-2013, 10:41 PM   #2
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2008 BMW 335xi  [5.00]
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Originally Posted by Chrisred
While cruising at about 2000rpm on steady throttle, I noticed that the car does a tad of a jump. Feels like one would tap on throttle every 2 sec. The rpm's don't go up or down. Any ideas??

Recently changed serpentine belt and Vanos solenoids. No codes on BT tool. It's an xi. Transfer case was replaced two years ago.
When you accelerate from a standstill, to you get a jag at about 2000-2500rpm in first and second gear?

Mine as started to do that and since I put a JB4 it just made it more obvious
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      08-09-2013, 04:58 PM   #3
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Weirdly and luckily this problem went away.....thank god. Lasted like 3 days.
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      08-09-2013, 11:17 PM   #4
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Weirdly and luckily this problem went away.....thank god. Lasted like 3 days.
My problem is solved also.

I contacted Terry (awesome guy!) since I have a JB4 and he sent me an updated version of the ISO (version 25 I think) and then I did some logs and sent him the results... Took him less than 5min to write me back and suggested to take menu 12 down to 25 instead of 40... Problem almost disapeared instantly! I am now running menu 12 at 21 and cant feel the issue I was having anymore!

Thanks goes to Terry for the superb customer relations
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      08-10-2013, 05:17 PM   #5
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I have it set at 32 currently. Minimizes rattle at that setting.

Command 10 (lagfix) is at 84
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