Check the evap canister. You may have filled it with gas and ruined it. It
would be worth replacing. Pull the hoses to it and check for gas and blow
them out if possible.


"SR-71" <sr71@rous.com> wrote in message
news:Iuednbpx9IxY4OHd4p2dnA@adelphia.com...
> > Had you driven any length of time with the MIL on? That can be enough
to
> > finish off a catalytic converter which is past its best. Freeway
driving
> > for any length of time, especially every day, should be enough to burn
off
> > any contamination and keep a cat in good shape - your mileage seems
early
> > to me for it to fail based on your driving habits. Is the engine
getting
> > up to full operating temp and giving good heat?... IOW no sign that the
> > thermostat might need replaced.
>
> First of all, thanks for all the comments from everyone. I appreciate it.
>
> To sort of address what everyone has asked, here's the background that I
> left out of the original post to keep it from becoming too convoluted:
(Just
> in case you are interested).
>
> A few months back (which adds up to quite a bit of mileage on my car
> quickly), a gas pump did not click off, and before I could stop it, the
tank
> had filled and the gas ran out onto the ground. The MIL came on with the
> P0420 code. From that day forward, pumping until first "click" resulted
in
> the P0420 code. So in the repair interim, I started filling up with less
> fuel than I believed would fill the tank. The MIL would go off after a
few
> trips.
>
> The problem was that now my fuel gauge was no longer accurate! It remains
> that way to date. I'm guessing it's 3/8 to 1/2 of a tank off! (Showing
> emptier than actuality).
>
> Recently, the MIL came on again, this time permanently. The code I
received
> was the EVAP leak -- I bought a new Honda gas cap to test. Almost right
> after that, I received the P0401, EGR insufficient flow. This is when I
> took it to Honda to have the free port cleaning -- solving the EGR flow
> code.
>
> Gas mileage seems okay. When new, I think I was getting around the 28MPG
as
> advertised. Now when I check (meaning I have to resort to letting the gas
> pump click once), it ranges around 26.5-27MPG, 25.5-26MPG w/ A/C on some
> days. I think the worst is around 25MPG. I did have the thermostat
> replaced a few months back (probably time again). I wasn't sure, but
before
> the replacement, it did seem like the engine was running too cold even for
> the winter...dragging down the MPG.
>
> I just received my Helm manuals today, so I'm going to look into checking
> the Fuel Sending Unit, as well as the other emissions/re-circulation
> components such as the PCV.
>
> The reason I was skeptical about the Catalytic converter was that there
was
> so many other issues going on with the emissions system. But from reading
> the comments, it seems like that very well could have pushed the converter
> over the edge.
>
> If you have any more suggestions, feel free to send them my way.
>
> Thanks.
>
>
>
>
>
>
>