Air Flow Measurement

[Chuck Tomlinson]

> From: Neil Powell <neilaura at ix.netcom.com>
> 
> I have been following the discussion on closed/open loop A/F and O2 
> sensor readings with great interest. I understand that the O2 sensor 
> reads the oxygen content of the combustion products and outputs a 
> voltage. But us California folks have this horrible pump that forces 
> air into the headers to cut emissions, so how can the O2 sensor give an 
> accurate reading??. Any comments anyone.

My Chevy as an electric air pump.  It only runs during 
warm-up, before the engine first enters closed-loop.
--
Chuck Tomlinson