So i went to change my spark plugs the other day and after everything was installed back together i had a rough idle?? So i took the new plugs out to make sure it wasn't those and re-installed the original plugs, still rough idle. I'm POSITIVE everything is installed correctly and all plugs/coil packs are on tight. I've heard some people say this could be a vacuum leak?
I mostly feel the idle down in the pedals. but i can also hear it slightly. anybody have any ideas on what this could be?
Another note. the idle gets worse when i use my power windows. as if the extra strain on the alternator is bringing it down, however it's much worse than it ever used to be.