So i have and 09 sedan 49k. I had the new program on the tranny about 9 months ago but heres the problem, it seems every time i come to a stop after about 3 seconds i just feel a slight shudder. almost like the car wants to push an inch foward. It happens all the time. wondering if anyone has had this. i brought it to the dealer and they said they will reinstall the program but idk whats up. any suggestions would be great. thanks in advanced

 

I only experienced it one tune and when I press on the gas pedal it lurched forward. It was so rough the thought I broke something in the transmission. Thankfully never happen again.

Try ecu rest, can't hurt.
http://www.6mt.net/forum/performance...rocedures.html

 

Ive cleared the computer several times when i put on and off my k&n typhoon threw a code(vac leak) and it has still done it, now back to stock. Also it only happens when my foot is on the break not when im moving, usally when i come to a stop sign or light after driving around. Thanks

 

I have something similar - after I come to a complete stop with the engine at idle the car shudders a bit. It's hard to explain but it almost seems to be resonating causing rattling some somewhere inside the dash. If the idle goes up even a fraction (with me slightly touching the gas while still holding brake), the shuddering goes away. If I am at rest long enough, the shuddering goes down which I believe is due to a slighly lower idle. It is most noticible when the radio is off and actually reminds me of the idle in a dinky 4 cylinder. With the radio on, I don't even notice it.

The car is butter smooth (without rattles) everywhere else in the RPM range while in motion.

Brian

 

This is maybe caused by dirty carbon buildup on manifolds, try cleaning out your manifolds (both sides)...from my experience to similar issue

 

Brian hit the nail on the head with that one. Thanks for the advice. Should I take off and spray everything down with tb cleaner??

 

Yep...just follow the instructions on can and your good to go