2001 Taurus Check Engine Light on?

-The check engine light came on in my 2001 Ford Taurus LX. I had it checked and they said it was the gas cap. I replaced the gas cap and the light still came. I had it checked again and it was still the gas cap, but it was replaced. What else could be the problem?gas filler neck, fuel pump housing gasket, rubber hoses going to gas tank and charcoal canister, gas tank pressure sensor, bad canister vent solinoid, bad purge solinoid.



With a .020" pinhole capable of triggering an EVAP code, you need to leave the diagnosis to someone with a smoke machine and other tools specifically equipped to go after this pesky problem.



Hopefully, you didn't put on a "brand X cheapo" gas cap.
Most common reasons for your check engine light being on:

Misfiring Plugs

Catalytic Converter

Mass Airflow Sensor

Faulty Oxygen Sensor

Loose / Missing Gas Cap
this is an article telling why the check engine light on.

http://chinasinoy.com/service/why-would-鈥?/a>

you can have a look.
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