On Tue, 5 Dec 1995, Dan Houg wrote:

> Conclusions:
> i think my next step to lower the open loop sensor voltage will be to 
> increase air flow meter spring tension a notch.  i am currently 
> "Techron-ing" the van in case an injector is bleeding fuel but again 
> i don't expect it to be this.  i'm wondering if the flapper spring on 
> the air flow meters slowly looses some of its tension over time and 
> needs to be brought back in line.  

I'd agree with you on this.  I installed a brand new AFC and, even after 
retesting by Bosch, I still could not get the CO in spec.  It wasn't 
until I tightened up the spring _4_ notches that I was able to get the 
van to pass.

Jack