2004 Tacoma check engine light, 100 miles

Yes, which is why it came on.

Hey thanks, you're really helpful. Please stick to pr0n-related newsgroups.

What does the dealer say about it?

I am bringing it in tomorrow afternoon and will share the results.

So as I mentioned, I checked the gas cap before bringing it in. It was tight. After they looked at it, the dealer hands me the keys and says "loose gas cap." I said "no way." That's what the computer said, and they turned the light off.

Two days later, the check engine light comes on again. I have not touched the gas cap since picking it up from the shop. Now I'm taking it to a competent dealer.

If the other dealer can't help, find out if the service department is open on Saturday. Go in and ask the supervisor for a conference. Walk him into the sales area and TALK VERY LOUD. Your vehicle will be fixed.

Have the gas cap pressure tested, or just put another one on. It is possible that the gas cap is defective and isn't sealing correctly. Any jiffy-lube type place with ODBII emissions testing equipment can pressure (vacuum) test the cap for you.

A new cap could have been scored on the rubber seal when the dealer or new owner did a fill-up or inspection, it could be the wrong cap, it could simply be defective.

good luck! GTr

Try a tank of mid-grade gas and close the cap as tightly as possible.