I suggest you go to Honda and buy an oem gas cap. I doubt if its a problem
with your evap canister. if the cap doesn't seal the tank, no pressure
builds, and you get evap purge code. this system doesn't allow gas
fumes(hydrocarbons) escape in to the atmosphere. and just cuz you disconnect
a battery on 1996+ car doesn't permantly erase dtc codes. they do stay on
the computer. and if there is a problem they will come back till the problem
is solved.
"mike" <mikein562athotmail@hotmail.com> wrote in message
news:7Ogdc.93620$gA5.1182523@attbi_s03...
> ive got a 98 civic hatchback, and the past 2 times ive refuelled, the
check
> engine light has come on. the first time, i reset it by disconnecting the
> battery, and that worked. this past time, the same technique wont work.
>
> some more facts, which might help...
>
> the gas cap is 2 years old, and aftermarket. lost the OEM one.
>
> i make sure it clicks when i put it back on
>
> yes, i *have* topped off the tank beyond one pump click, which leads me to
> believe its something to do with the charcoal canister. bad habit i need
to
> stop doing, right?
>
> i havent bought a code reader, or had autozone check for codes.
>
> yes, i need to check for codes, but i figured others here have had the
same
> problem, so i figured id try here first. there is a sensor on the charcoal
> canister, and i would guess that might be the problem. supposedly theres
an
> issue with the sensor, according to one website ive seen.
>
>