crazy problems

My 95 eclipse rs is have a tantrum. after it starts to warm up it starts bucking, the check engine light flutters really bad along with the a few other lights on the dash. The rpm gauge drops to 500 rpm and flutters really rapidly between 500-1500 rpm for a few seconds. it so bad i cant even drive around the block with out looking like a new mt driver.(its a mt by the way). I have changed the coil pack, the crank sensor, adn cam sensor, and fuel pump. If anyone please know anything else it could be pls let me know.:banghead:

Checked the IAC sensor yet? (idle air control)

Also we have subforums, you should use them accordingly next time. Thanks.

Spark plugs and at what gap?

i had the same issue and still kinda am, check your plugs and make sure there gapped rite i think its 0.44 for 4g63 n/t's and 0.28 for 4g63t's.... it most cases mines was my charcol canster. i blocked it off along with the egr and now im getting more HP and a hell of alot better T/B responce.

Mine did something simmilar when my ECU went out, but then again mine is a 90.

I pulled the code its a p0412 secondary air injection valve malfuction. No idea where to even begin. Would like to know how to block off charcoal can though. This is my first dsm normally on all my old hot rod chevy's i remove egr charcoal canister and oother crappy emissions stuff.