Don't overfill your gas tank !

[merlot4]

Never heard of a "Check GAS CAP" message being programmed into our Birds but do know that an improperly tightened gas cap will drive a "Check Engine" message and light. What say yea you Bird experts?

Agree, only the yellow engine light of death appears.

[hippy_mailman]

Never heard of a "Check GAS CAP" message being programmed into our Birds but do know that an improperly tightened gas cap will drive a "Check Engine" message and light. What say yea you Bird experts?

there actually is a "CHECK FUEL CAP" on the dash the 2004 workshop manual talks about it on page 413-00-5 when I first bought my car I did not get the cap on tight and that light did light up I went back and redid the cap and within 5 miles it went out. I remember it as a check engine light would have freaked me out and I would not have known to check the cap

[RustyFrye]

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there actually is a "CHECK FUEL CAP" on the dash the 2004

And on the 2003 as well. Turn the key and it, along with a bunch of other lights will light up for a brief moment.

[2K2BIRD]

Found this on NAPA's site regarding 2002 Thunderbirds:

https://www.napaonline.com/en/auto-p...fuel-emissions

[hippy_mailman]

Still the 2002 also does have a check fuel cap light. states in in manual page 9
does not necessarily mean that a loose cap could not cause engine light.I would guess both could come on
as for the original poster I fill mine past the "click" as far as I can and have never had an issue in my bird or any other vehicle I have ever had.although I admit I have spilled before

[007Cruiser]

Never heard of a "Check GAS CAP" message being programmed into our Birds but do know that an improperly tightened gas cap will drive a "Check Engine" message and light. What say yea you Bird experts?

I think you have now been officially enlightened on this subject.

[wcoates]

I think you have now been officially enlightened on this subject.

Learn something new every day on this site. That's why it is absolutely the best automotive forum on the internet IMHO.

[Frank Dreano]

My 2002 gas cap has a clear warning on it about a CHECK ENGINE light if the cap is not sufficiently tightened after refueling...