The air filter is relatively new, maybe a year old I think. I will look at it and see if it looks dirty or clogged up or anything.
Yes, I've googled changing plugs and it does look emberassingly easy. I may give it a shot here if none of my other options work.
I've gone thru the whole tank on Gumout and I got roughly 27 mpg, which is what I used to get on about a 50/50 split of highway/city driving. Is it ok if I just try one of the Techron cleaners in my next tank right away or should I wait awhile? I don't know if it's ok to chase one with another (there will be one tank in between)?
Anyway I'll be out of town at my parents' this weekend (assuming the car makes it..heh) and there's a much easier Autozone to get at out there so I'll be headed in for a code dump to see what they say. I'll probably just tell them the light is coming on and off if they won't do it without the check engine light on. We'll see what that says. I'll post the codes as soon as I know.
Thanks again everyone for all your advice and help.
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"Glory is fleeting, but obscurity is forever."
- Napoleon Bonaparte
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