Chrysler Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome to just answer ans allowing me to assist you. If the gas cap light is on and the cap is tight / was replaced, you probably have a leak somewhere else on the "EVAP" system. In short this is the system that monitors whether your fuel system is leaking fumes or not (environmental concern). The usual cause for "leaking fumes" is a gas cap that does not seal properly, but your leak may be elsewhere. Piping for this system runs from your gas tank, to your filler neck, all the way to the engine compartment of the car (to a purge tank and solenoid). This system also has piping that lets your engine burn these fumes at regular intervals. Most automobile service garages have equipment to check for leaks in this system. It might be wise to have a shop do a scan of the EVAP system . Hope this helps you find your problem and if you require further assistance I'll be happy to do so.
as stated in the noted it could be in the EVAP system loosing pressure needs to be checked on a scanner to confirm that
no not at all it's just to recirculate gas fumes . The only thing about it is it won't pass an emission test until it is fixed. The light comes on because it is reading an incorrect pressure in that system possibly a leak. I can't say how much to fix it without diagnosing and finding exactly what part it requires. Hope this gives you an idea to make your decisions. here is a pic of an EVAP system
yes over filling can do that but you don't need to leave it open because it will do a self check a well. Hope this helps and if you rewire further assistance I'll be happy to do so.