My first post, I have a 2002 corolla le, I just noticed this issue, when I start the car and drive to a stop light or sign, there is a hesitation when I gas the car. It feels like a lag, but it only happens when the car just starts to warm up. Never came across this issue after numerous startup and shut downs. Any ideas? Also on a side note, I noticed there is some build up of some kind of substance on the lower radiator hose( I think it is the lower hose) not sure what it is or has anything to do with my issue. Thanks