A Word About Idler Arms
Did you know idler arms are supposed to be stiff? Because original Mustang steering systems were old and worn out the first time they were replaced, it was easy to assume their stiff factory idler arms were junk. However, this isn't true. The original idler arm was stiff because it was designed to snap the steering back to center after a turn. Aftermarket idler arms roll smoothly from side to side because that's the way they're designed. That doesn't pose any danger. However, expect your Mustang's steering to be more sluggish.