OK heres the deal....
2000 civic si----
and i had a check engine light, and i checked it by touching the 2 connectors by the ecu, and it blinked 1 long and 7 fast... so code 17.....

what has happened: when i first start out driving vtec will work, but after awhile vtec stops working, and also when im cruzing the same speed for awhile my car starts to decelerate by itself and i feel a lil jerk. then when i try to stomp on it, i get no response, so i have to (while in motion) turn off the car and restart it. HELP!!!

What is it, what do i do?