i'm only able to fill up with 8.5 gallons. i thought our fuel tanks had the capacity of 15.5 g. Do yall know what could be causing this?

 

you started out with half a tank?

ha ha im sure thats not the case, but have you ran in it out of gas and then tried to fill it? I had a similar problem with a lebaron that I used to have and I found out later that I had a huge dent in the top of my tank.

Were you using a fast pump, if the gas tank breather tube is dented or somehow plugged it could cause the gas to back up the filler tube and shut the pump off.

 

Well the car died at the pump cause it was past E. Also i've been under the car to see if it was dented a while back and it wasnt. Everything seemed good. I know it can't be a different tank either cause its the original tank and i saw the part #