fault CODES HELP! please

[randrews@post.cis.smu.edu (Robert Paul Andrews)]

I just started to have problems with my Check engine light coming on.  It
will not stay on, just flicker on and off.  It seems to do it during sitting
in traffic and with a hot engine.  I plugged a fuse in the fuel pump relay
to get the codes and all it dumped on me was this :  3 short blips, pause, 1 
blip, pause again, then the pattern just repeated.  Any one please help.
I am really stumped here.
Thanks
Rob
randrews@post.smu.edu