Gas cap indicaytor light came on. Changed cap and made sure it was tight but indicator light still comes on

tune up time?, at least spsrk plugs, and filters.
misfire is just that. its misifiring and #1 top of list, 100 years is tuneup.

Check the gas cap and make sure it is tight. That will sometimes cause the check engine light to come on. If that doesn't solve it, try going to an auto parts store that will check the code for free and find out what is causing it.

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any time a check engine light comes on it indicates a problem in the system. advance and auto zone will scan for free. alot of newer vehicles will set a code (lite on) if you dont get your gas cap on tight.

the cap most likely set an evap code in the computer have it checked with a scan tool.if the cap is on tight then just clear the code and the light will go out.

Sometimes when you dont close your Gas cap tight, the light come on But could be something else detected by the computer. Take it to an auto part and they will scan it for you for free and they will tell you whats the code. Good luck

If the light is out, no worries. if it comes back on and the cap is tight, there may be other problems and a qualified repair shop will need to diagnose that for you. It may have a Evaporative Emission Leak.

unplug the positive wire on battery and it will go off...make sure the gas cap is always tight and the engine isnt running while filling the fuel tank...beleive it or not this will cause the light to come on

Yes, the gas cap will cause the Check Engine Light to come on. Will set code P0441 if I remember correctly. It should be okay to drive it. If you would like to confirm the code, take the truck to an auto parts store like Autozone and have them hook up their scan tool and read the code. If its P0441 it will probably be something like EVAP or Evaporative system leak.

Its an easy enough fix while your there too, just pick up a new gas cap or you could pick up an OEM one from the dealership.

You should get the problem code ran at a shop or auto parts store. My moms 2003 Toyota Echo check engine light came on and it had a slight misfire, I replaced all the sparkplugs about $20 and no check light.

Hope this was helpful

I have had the same problem recently. I did some searching on the internet and came up with nothing. I went out to my car and decided to take a look at the gas cap. I noticed that after turning it and hearing the clicks that are supposed to tell you it is tight, the cap came off again with no effort at all. I brought the gas cap to Advance Auto Parts and I found out that the spring mechanism inside the top of the gas cap was worn from use. This was causing the vapors to leak out inturn causing the check engine light to come on. I bought a replacement STANT gas cap (specifically for the 2006 Suzuki Forenza) for $9 and the light has been off for the past two weeks. The dealer wanted $80 to diagnose the problem and then another $30 if they needed to order a gas cap. So, I decided $9 was better to waste then $110 trying to figure out the problem. I hope this helps.