Just a heads up.

My mom has a 2000 Accord LX sedan 2.3L auto that she just loves.
The car has been well flawless since she bought it. Well about
6 weeks ago, she called me saying that her check engine light
came on and won't go off. She stated that my youngest brother
has gasing up her car and that he didn't tighten up the gas
cap correctly. She tightened the gas cap but the problem didn't
go away. I told her to wait it out before taking it into have
the car looked at. About 3 weeks after her car, I made a trip
to Houston to visit family. I gave her car a good once over
to see if anything was obviously out of wack.

I went through her owners manual about refilling and found out
that her Accord has a vapor recovery system that would trigger
the check engine light if the cap wasn't tightened with 3 clicks.
According to the manual the problem would go away after 3 trips
if the cap placed on again correctly. But it had been 3 weeks
and much more then 3 trips. So I was at a crossroad. She wanted
me to take it into the dealer to have looked at. But I was a
bit skeptical. Instead I took a $10 gamble and purchased her
a new gas cap from Honda. 2 weeks later the light still wouldn't
come off. She was really getting worried now so I told her to
go ahead and take it in to have inspected ($80). Well on the
drive to the dealer, the check engine light finally came off.

Since the light didn't come of until an event (not closing the
gas cap correctly), I knew it was something related to that.
However I didn't think it would take soooo long for the system
to recover from it.