Hello, I am currently having a problem with my 2007 2.2L Saturn Vue. The car starts perfectly fine randomly the check engine light will turn on and stay on but when I check it says no codes. I finally ended up getting the code and it was p0300. The thing that is throwing me off is if I have the A/C off the engine feels fine but as soon as I turn on the A/C it starts to sputter. If anyone has ever dealt with this situation and give me some advice I would appreciate it.