http://www.focusfanatics.com/forum/showthread.php?t=112445
http://www.focusfanatics.com/forum/showthread.php?t=243043 Read the very last post. http://forums.focaljet.com/team-tech/589679-2003-zx3-vibration-idle-2.html http://www.fixya.com/cars/t3536097-2003_ford_focus_zx5_engine_vibration Rick Sent from my iPhone. On May 16, 2012, at 8:41 PM, "Allan Streib" <str...@cs.indiana.edu> wrote: > 2003 Focus, DOHC Zetec engine, 150K miles. Has developed a rough idle, > actually more like a low frequency vibration that is more apparent > inside the car than out. > > I've changed all the motor mounts, which reduced the interior sensation > from almost a buzzing to a less objectionable vibration. > > Recently changed spark plugs. That didn't make any noticeable > difference in anything. > > Tried unplugging and capping vacuum line to EGR valve, no change (though > that doesn't eliminate the possibility of a stuck valve, I guess). > > MAF sensor looks clean (but have not tested it electrically). However > that doesn't have much to do with idle does it? > > Only filter that is not new/recent is fuel... but if that was restricted > I'd have problems at speed more than at idle wouldn't I? > > No apparent leaks, tonight I spritzed carb cleaner in all likely areas > and the idle didn't change at all. > > Otherwise it seems to run well. Check engine light is not on. Starts > easily, has good power. > > Other ideas? > > -- > 1983 300D > 1979 300SD > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
