Originally Posted by WhatTheFocus
Ok, been drivin in "D" since I've owned my 2013 Se hb.... i get the intermittent shutter as mentioned thousands of times before by others... problem is... there's no rhyme or reason to the shutter... one day the car drives great, next day it shutters badly.... So as of this week, I began driving in "S" Mode all the time... the only noticeable trend I've picked up on (for my focus anyway) is that the shutter occurs when the car would be just under 2k rpm's when driving in D Mode so my experiment has been to drive it normally but shift at about 3-3.5k.... keeping the rpms higher has helped drastically. I havent experienced any shuttering since shifting this way.... only time will tell if that trend will continue but for now, it's shed some light on what driving this car in smooth conditions is truly like. I'm curious if there are any other "S Mode'ers" out there who have also noticed improvement in driveability using this... and/or at what rpm's you generally shift at.... at the expense of some mpg, i'll gladly take a smoother ride at this point....
I too started driving in S mode a few weeks ago. Although I rarely use the select shift buttons, and just let S mode do the upshifts for me. While it hasn't totally eliminated the intermittent shudder, it does stay it off for a while. When the shudder does return, I disengage the traction control, press the brake down far enough to activate "launch control" and spin the engine up to 2500 rpm a couple times. Then, I give it about half throttle from a standing start through 2nd gear. I'll run through this process twice in succession, typically on a side street or empty parking lot. That seems to cure the shudder for a while.... then keep using S mode, unless I'm up to speed on the highway. S mode inhibits it from shifting into 6th gear.