My EBPV is sticking. When it is cold, sometimes even in the 40's, the valve kicks on and will not disengage no matter how hard I press on the throttle. It just billows black smoke, makes a bunch of noise, and goes 5mph. I have to stop, put the truck in neutral and rev the motor a bunch of times until it releases. This usually only happens when I start it in the morning. I am sure my neighbors down the street love when I pull over and start revving my truck outside their house in the morning. What do you think is going on?