I currently own a 2006 Chevy Cobalt. For the past few months it had a problem that every time I get gas when I go to start the car up I have to pump the gas pedal and crank it at the same time to get it to start running. Once its running I have to either get driving pronto or sit and it park and accelerate it a little for a bit to keep the car running. If I let go of the gas pedal the car will clunk and shut off. If I drive off after a few blocks it’ll work fine and I won’t have the problem again until I put more gas in it. Occasionaly when at a light or stop sign while in drive the car will clunk a little but normally stop after few seconds.
I went to AutoZone and they told me I had a pressure thing (can’t remember fully) but to replace the gas cap. Which the car tells every so often to check my gas cap. Well 4-5 gas caps later problem still there.
Any ideas on what it could be or how to fix it, last resort is to take it to the mechanic and pay a nice bill for a fix.