[HoodStrype]

TPS (Was my problem- only 20 bucks), air bypass, loose or corroded wire (check the main wire to the firewall), corroded intake/TB...

I am a huge believer in checking or changing sensors... try the TPS first since it's the least expensive! Also I've had a wire trying to come loose causing surge.

Oh yeah... I just read that the "check engine" light blinks on and off... the only thing that will cause that is emissions, like u said an o2 sensor, egr (surging?), gas cap, maf sensor, etc... it really should say check emissions, but i'm no engineer.