Constant stalling after fueling up

SHAWN.GOULET-97

MEMBER
2004 CHRYSLER SEBRING
4 CYL
2WD
AUTOMATIC
151,003,142 MILES

Every time I fill my car to full when driving it randomly "chugs" makes kind of a jolting motion then stops. While going through town and coming to stop signs or lights it stalls and my oil pressure light comes on. It starts right back up then persists to do this until the gas gauge is at or below 3/4 of a tank. It is quite annoying. Also, I should mention, while fueling I have to do it really slow or little bits at a time or it overflows onto the ground and stops the gas pump. Also, after vehicle has been running for awhile when shut off the fuel pump stays engaged unless I open the gas cap then it stops after all the trapped air purges out. I now have a cylinder three misfire and I believe it was caused by this, but I do not know. Please help. I cannot afford a mechanic. I have little bit of knowledge with mechanics but still struggle.

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,772 POSTS

Hi and thanks for using 2CarPros.com.

Your vehicle is equipped with an Evaporative Emissions Control System (EVAP). Now, for gas to enter the fuel tank, air must escape. On the other hand, when fuel is drawn out of the tank, air must enter. This is done via liquid separator when refueling and the ventilation valve when fuel is drawn out by the fuel pump. This valve, which is part of the EVAP system, allows air to vent through the smaller vent line in the filler tube (where you put the gas). Without it, air can't escape to allow fuel to enter. Now, I suspect when you are refueling the tank, liquid fuel is being forced into the EVAP system and causing the engine to run poorly until the fuel level drops below the leveling valve.

Take a look at the picture I attached. The first thing I would recommend is to check the vent tube for damage or if something has pinched or kinked the line, not allowing air to escape. Do that first and let me know what you find.

If interested, here is a link which describes the major components of the EVAP system.

https://www.2carpros.com/articles/how-emission-control-systems-work

Let me know if this helps.

Joe

Image (Click to make bigger)