so my car a 1994 civic si hb and it got some front end damage and i've got it all fixed up and looking pretty and now there is a rought idle

Symptoms .....
* Very high idle and
* it's jumpy its around 1500 and very up and down
* exhausted kinda smelled lean

i've checked all my vacuum lines
no check engine light is on
could it be the o2 sensor ?
the o2 sensor wires were grazed (by the rad. fan)but still intact and there is no damage to the 02 sensor this is all very weird.

just a thought could the idle control valve have been shaken up or something by the impact?

well not digging the idle so i need some ideas. exhausted kinda smelled lean


and can i pull diagnostic lights if there's no light? or how do i reset my ecu?

i had to get a new rad. and new fluid would running it for a while fix this?? it only ran for about 2 min then i shut it off.