lean at idle

[Brett Dikeman]

On Wed, Apr 29, 2009 at 4:10 PM, Hayes Myers <hayesmyers at gmail.com> wrote:
> It will eventually recover at idle and read normal...then it will drop off
> (like it stumbles a bit) and will read lean...then bump back into green
> again.

How are you measuring A/F ratio?  The stock O2 sensor?  If so, how old is it?

O2 sensors don't fail completely, they just respond more slowly as
they get clogged up.

Brett