cleaned intake, MAF,IAC and then oil change...now CEL is on?

[cantspell]

Hi there, i'm off tomorrow to the biggest wheeling trip i've organized and so today i decideded i'd try to do a mini tune up. I did the drip down intake clean thing, used electrical cleaner on the MAF and IAC and changed the oil (and spilt it all over everything!).

I was a quart short, so later on this after noon, after about driving 25km, i bought some oil and added it. Now my check engine light is on, it's not even comming off when i disconect the battery ????

Any idea's? I know it's hard to say, but maybe someone has run into this before?
I do smell a slight burning scent that was around when i was doing the intake clean, and i had cranked the engine over once without oil, to get the oil from the pump...

 

[5.0 Mountaineer]

If you did an intake cleaning you might have gotten some fluid into the cylinders causing a slight misfire. If you pull the code it will probably be a p0300 radom cylinder misfire.

 

[mhn3773]

when u disconected the battery did u leave it sit for 20-25 mins? i belive it takes a bit of time to reset the computer