Originally Posted by
oledoc2u
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
I had a feeling a CPS could cause some of these problems. All I needed was verification to go and do it. Fixing to call locl auto store and see if they have a Bosch, gonna run a voltage reg and test the battery and alternator next. And someone said the speed sensor could be locked u with brake dust which is a serious problem I have, dust, I drive on dirt and rock roads so definitely a problem. Or even a squirrel/mouse ate the wire which is also very likely