ok.. i'm coding out 1, for the main o2 sensor.. "sometimes'.. ??

my cel comes on 'maybe' half of the time.. sometimes it doesn't even come on, and there's no problem..

when it does come on, i code 1 (main o2 sensor) and 17.. (my speedo isn't hooked up.. i'm using GPS)

'if' the cel comes on, the car seems to sputter a little if i'm 'holding' a steady speed, but if i give it gas it revs right up, it's never died.. is that because of the o2 sensor, or is it something else on top of it ?

thoughts? ideas?

thanks

chris