As joatmon said, it could be a small vacuum leak. As the engine warms and the parts expand, the leak seals up. Other thought are possible fuel injector leaking as it sits, and possible throttle body butterfly sticking. Make sure your throttle body is clean. What brand of spark plugs are you using? ...

With the noise you describe, I wouldn't rule out a mechanical issue with a valve or piston. The cylinder misfire code doesn't care about the ignition--it's a mechanical sensor. Here I have attached a link to a video of my car starting when the misfire happens, let me know your thoughts! https://you...

Welcome to genvibe I don't know if the forum allows uploading a video, but since upload seems to have a small file size limit, it might not work even if it does allow videos. People seem to upload the video to youtube and then post a link here to it. My first 03 had a problem that was not unique, a...

2009 Pontiac Vibe - 1.8L engine (2ZR-FE) I have unfortunately reached desperate measures but I am hoping someone may have a possible logical answer Here is the story, when the car has been sitting for longer than 4 hours when the car is started it pretty much sounds like the engine is chocking, rpm ...