Why would you need an alingment after doing an idler arm? Nothing moves..

 

i beg to differ. The old idler arm wasnt sitting in necessarily the same place as the new one.. You might think to yourself... "well my toe hasnt changes as my tie rods havent been adjusted at all..." but if that were the case why would people ever need an alignment.. if you dont move anything you dont need it right?? but hold on trucks do need alignments regardless..

wow i hope that made sum sence.. im terrible at wording things online sumtimes
just trust me, an alignment is suggested whenever changing any front end components

 

Well I can see regular alignments as driving, hitting bumps can knock your alignment out, but I didn't think you needed one after changing the idler arm since you're not moving the truck/steering at all...hmmm