codes P0300 and P0449 03 chevy venture
2003 chevy venture. My problem started over a month ago, I was driving up a hill and the van shut off as if i turned the key off, once I pulled over it started right back up. A couple of days later it did the same thing, and again a couple of days after that. The 3rd time it stalled on me when i was just driving along going about 35 mph on a straight away, i pulled over to start it but it would not start this time, it would crank but no start, it wanted to start it just would not, it was acting like It was out of gas, but I had a full tank of gas. My fiance came and we had to push if off the road, once off the road he took the fuel filter off and gas shot out everywhere so there was lots of fuel pressure, so he blew threw the filter and some brown gas came out of it, he put the filter back on and now it didnt even want to try to start any more like it was b4. So the van sat all night, the next day we were on our way to get a fuel pump from a junk yard but decided to stop by the van to see if it would start, and it did. I got it home even drove it around a bit, went to advance auto, they told me it was throwing a code for a sensor that was above the gas tank, I asked them to give me the code # but the guy was to lazy to go in the store and actually do his job so he insisted it was this sensor, so I came home and did research on this sensor, (fuel vapor pressure sensor) he said it would cause vapor lock and make the van act like it was running out of gas, so stupid me bought the part that was 42 bucks, now at this point it was a couple days later and the van would not start at all, well after my fiance changed this sensor, the van finally started, it stumbled and grumbled, spit and sputtered and carried on real bad for like 2 minutes then it finally evened out and idle perfectly. I had to take my daughter to practice across town it was fine, I decided to go to the store up on the hill, and it started acting up again. It was just sputtering a little bit like i was running out of gas. Made it to the store and left stopped to get some gas, I added about a half tank and added some gas treatment. It ran fine the rest of the way home. The next day it acted up again, so I took it to the local garage to put it on there computer and it showed about 5 diff codes, they told me to start with a tune up, so I had my fiance put new plugs and wires on the van, this ended up being a 2 day job because anyone who does their own maintenance on their Chevy venture knows what you have to do to get to those &^%$ plugs in the back!!! He got done with it then I took it around the block, still acting up. I went straight to advance auto again and diff guy was telling me same problem with this sensor we had already replaced, and again was to lazy to give me the code is was throwing, so I went to Auto Zone and they gave me a code for P0300 and P0449. So after about a week the part came in for a canister vent valve solenoid, and he replaced it above the gas tank, but the van is still acting up and 100 times worse than it originally started out, i cant even take it out of the garage now with out it grumbling and having a fit, and it just stalls. I am at wits end, dont have the money to get it towed to the garage, I am screwed can anyone please help me figure out this junk!!!
So as it sits we have a no start, P0449*, P0300? YOu have NO other issues? Be advised a code does NOT advise to change a part - (part stores sell parts) - P0449 is control CIRCUIT issue, did you check for 12v at valve - maybe wiring or a fuse? I would do a fuel pressure test - you NEED to use a gauge, often available as a rental or loaner but critical for doing diagnostics on fuel injected engines. PS - fuel pump NO NO NEVER use a junk yard pump one of the worst ideas I ever heard. it is strongly recommend you use a OEM only - a quality aftermarket is a distant second recommendation, I shake my head no as I type, aftermarket fuel pump. *DTC P0449 Evaporative Emission (EVAP) Vent Solenoid Control Circuit