Re: Messed up throttle - PLEASE HELP!
Wow....quite the day. The starting and jerking sound a lot like the Crankshaft Position Sensor. The secondary air injection is a common code thrown. There are plenty on threads about it. Nothing to worry about for now. The speed sensor and the low voltage could be the start of a problem. So start with a Bosch crankshaft position sensor. I am sure, no I am certain, you will get many answers....lol