I have a 2004 Chrysler Pacifica and have a code of po440 is their any common problems
I have checked the gas cap and it seems to be OK. I have also checked for vacuum hoses being off or loose cant find any problem's their. where can I look.
You seem to have done all the right things so far,,take a look at: http://engine-codes.com/p0440_chrysler.html ...pretty good page to read up on it