ever time i put gas in my 2004 chevy Malibu the check light comes on what is the problem?????????

Answer 1

are you putting the proper grade of gas in? does it recomend regular, plus, premium?
or are you sealing the gas cap properly? modern engins use a preasurized system that needs to be sealed for proper operation.

Answer 2

Hello this is only a suggestion , i work for a manufacture of fuel systems and gas caps. on most newer auto's are controlled by an on board computer the fuel system works on a closed vacuum system if there is a vacuum leak this will cause the check engine light come on .
When you place your cap back on the filler neck turn it to the right till you here it click three times this causes the housing assembly to seal more tightly and hence the computer don't find a vacuum leak. if this don't work take to a certified mechanic this could be a sensor problem good luck.

Answer 3

I, too, have an '04 malibu - and I think I received something in the mail a few months back about a certain recall having to do with gas caps...not quite positive if that's what it was pertaining to, but it sounds rather familiar. I haven't had a problem with this myself...actually in the nearl 64,000 miles the only major problem has been the flippin radio.

Answer 4

Make sure you turn the gas cap so it clicks three times. This insures a proper seal. If the light still stays on, get a mechanic to check the seal. You can be losing gas through vaporization.

Answer 5

You need to have your gas cap checked to make sure it seals well
the gas tank needs to build up pressure to work properly
If it doesn't the check engine light will come on
you could also experience a rough running engine i

Answer 6

It could be your computer is having problems. It is probably nothing and will probably cost a lot of money to fix. If you want to make sure there is nothing wrong with it take it to a mechanic, not a dealer ship! The mechanic will plug there computer into your car and that will tell you if there is something wrong with your car or if there is just a malfunction with your computer.

Answer 7

you may not be getting the gas cap on tight enough that will make your check engine light come on

Answer 8

Are you filling the tank with the engine running?
If so, do not do this as it will cause the "check engine" light to come on.

Answer 9

check your gas cap it might be lose or the sensor in there is going out. you can fiddle with it after it comes on and see if that makes it go off... all in all i wouldn't worry to much about it!!!

Answer 10

i own a repair shop and there's no way to truthfully answer than without having it scanned ,its probably a sensor on it,but for me to tell you exactly which one it is, i cant ,and neither can anyone else,have it scanned ,auto zone does it for free,and they can tell you for sure what it is,then you,ll know,don't go buying anything for it until you know for sure whats wrong with it, it gets expensive after a while buying things that don't help one,good luck i hope this helps.