I have a p0440 code on Saturn vue 2008. I got a smoke test done & no leak was found. I also noticed some rattling in the front of car a I'm driving at slow speed & going over bumps. & The car have trouble starting when car sits for a couple of minutes. I got gas at night. The next day drove 2 work. After work on start up check engine light came on. Had it checked was told 2 change gas cap. I did they erased code. Light came back on after my 3rd start up. Light only comes on at start up. If I erase the light & drive all day no light comes on. It only comes onat start up. Smoke test done no leak was found. I also had the electrical checked for the starter & they said it was fine & couldn't figure about the long start time. Hope you can help.
Thank you very much,
have the same problem?
Saturday, October 1st, 2011 AT 2:19 PM