air pumps

[Scott Shotton]

Carl Summers wrote:
> 
> I wanted to thank everyone that helped me with the EGR problem on the
> AUJP 7730 I was working on....I have a question regarding the smog
> pump....This particular vehicle does not have one..and of course the
> aujp bin thinks it is supposed to...what happens when the computer opens
> the switch for the air pump????Does it change how it reads the O2???I am
> assuming there is an area in the prom to virtually elininate this from
> happening,,,or do I even need to worry about it???Has anyone played with
> this before???I could sure use some help(again)....
> Thanks,
> Carl Summers


I think the only time the air is dumped upstream is before closed
loop... no effect on O2.

During closed loop it goes downstream of the O2...  again, no effect.

Scott