Gas cap issue

[huntram03]

Ok so last year my Factory gas cap goes bad, so I go to Auto Zone and get a replacement. It lasted about 2-3 months and it went bad as well so I took it back and got another. Well same issue it went bad it 2-3 mos. I went to Dodge and bought one now its bad as well after about 6 mos. WTF is going on?? The code that keeps getting thrown is 0440. I have sprayed everything in the engine bay with carb cleaner to see if it chokes out nothing.. Inspected the evap system the best I could and came up with nothing. Only thing that is left is the gas cap. Has anyone ever had this happen this often??

 

[SmokedRam]

Did the parts house actually test any of the caps to see if they were bad? Did you inspect the purge solenoid and the evaporator canister real well?

 

[smiley]

my guess is that the real problem is your leak detection pump it is a little item but will cause this code. Please read my post from when I did my fuel tank swap I ran into same issue.
http://www.ramforum.com/f38/help_fellow_4th_gens-15240/index2.html

Part is probably pretty cheap takes like 5 minutes or less to swap out. I did not have to buy one as I just took the one off my 26 gal tank and put on 32 gallon tank and it worked ever since.