Yea, not sure why. Wasnt on last night at all, came home, parked. Woke up this morning for work, started it up and CEL never turned off at all, stayed on whole way to work... Hope its nothing serious, just got the RX-8! Only has 44k miles on it... I dont seem to feel any lack of power or anything, nothing feels different, hopefully its just a bad o2 sensor or something!

Will post what the code is when I get off work I hope.

 

Had the same problem and it was just an 02 sensor, do you have an 04?

 

gas cap ...

 

Gas cap for sure when the CEL hits on startup.

 

Yep mines an 04, and I'll check the gas cap when I go out on lunch. Does the gas door trigger the CEL or the cap its self? Just take it off and retighten? Funny that can trigger a CEL, considering its in the BACK of the vehicle, not the engine!

 

Gas cap itself not the door. You might just want to buy a new one from the local auto store as a test.

Take care,

Brian

 

It doesn't see that it's open and Throw a CEL. It causes a change in pressure in the fuel system and the car thinks something is wrong and then throws a CEL.

You can solve the problem by making extra sure it's closed by turning it a million times every time you fill up or you could go buy a new gas cap. I use the first solution.

 

Or if you have a warranty still in effect your local dealership will replace it with an 'updated' cap.

Regardless go to Autozone and have 'em scan it for you for free. Then search the forum. There are other checks done on startup but its almost always the freakin' gas cap.

 

yeah gas cap......if it is to be sure its tight like Shnifty said just turn it alot of clicks when tights that way you know it's on there good....go to autozone to check it out though just to b safe

 

you guys all beat me to it. I had the gascap light get me a few weeks after I got my car.
Autozone can pull the codes for you

 

Nearest place like Autozone, besides Napa, is like 140 miles away lol. Well, sure enough the gas cap was just sitting in the hole, not screwed in, so I screwed it back on. How long untill the CEL goes away? Or do I have to have the codes reset?

 

the light should go off by itself after a certain amount of drive cycles.
you could cheat and pull the battery cables for a few minutes to manually clear the code.

 

yeah it will go off after so many cycles but just pull the cables off the battery and it will reset and won't have to worry about it