Question

[dahoover5866]

K I have a random occasional check engine light according to a code reader it's a large evap system leak I think it's my exhaust flange messing with o2 sensors which may effect the evap system, my friend says that aint it an it is completely unrelated so should I get some new headers? By the way the light comes and goes....help please?

 

[billybob990]

Most of the time its just the gas cap.

 

[81SocalCJ]

Most of the time its just the gas cap.

I can't tell you how many times I see this at work. Now my first question to people when they come in for a check engine light is " have you gassed up recently?"

 

[dahoover5866]

Never thought of that actually :thumbs: the only reason I care is my ripp will be here soon and I don't want lights prior so if there are some I know to address them

 

[wayoflife]

Could be something as simple as a gas cap or, it could be a bad gasket on the EVAP. If it's not either of them, doing a leak down test is what you would need to do and if you're not under warranty, it's not cheap to do. Fortunately, having that light on for that reason is no big deal other than the fact that you have to look at it.

 

[Philip *AZ*]

Could be something as simple as a gas cap or, it could be a bad gasket on the EVAP. If it's not either of them, doing a leak down test is what you would need to do and if you're not under warranty, it's not cheap to do. Fortunately, having that light on for that reason is no big deal other than the fact that you have to look at it.

This is actually a very valid point. My moms car kept doing this weird sputter and then it would go into limp mode. The seal around the cap was bad. A new gas cap and viola no more issue. Kinda stupid that could happen really..lol


Lock Down or Get Locked Up

 

[10frank9]

I had an EVAP code too. Check here: http://www.jk-forum.com/stock-jk-tech-12/p0456-code-small-evap-leak-fixed-237480/

Good place to start.

 

[dahoover5866]

Thanks frank I'll check it out