zip,

thanks for the info . I did buy a new RCM and installed that . sending original to RJ for upgrade .
so it blew the f2 on the original and the new rcm .

started another post on this so that the heading would talk about blown f2 fuse , hope this doesn't add confusion .

unhooked sc and drove car easy , fuse was ok. then drove again hard wot . fuse blew . all with sc unplugged . when I get off work here shortly I'm going to unhook evap control valve and drive it home . see if the fuse blows . the only way I can think of zeroing in on cause is to disconnect everything I can behind f2 fuse until it quits blowing . then rehook up things one at a time and find cause . according to wiring diag. sc clutch , air pump solenoid , evap valve, charcoal canister shutoff valve and all 4 02 sensors are behind f2 fuse .
i'm open for any ideas.