Mine didn't until just recently, and still it wasn't really an issue at all. Had never been cleaned, even after 120,000+ miles. I just replaced it because the other one was just starting to stick a little, and was rather rusted. Got a newer used one from DoobyDoo for dirt cheap so I cleaned that one thoroughly and put it on. Didn't really notice a difference though as the sticking was only noticed by a dealership diagnostic machine.