SUV rough idles and stalls: tps sensor?

I have a 2002 Isuzu Rodeo, rebuilt engine,
v4. I cleaned the throttle body but need to
definitely run seafoam through it as there is
a ton of carb build up. I replaced the fuel
filter and it stoped stalling out but still can't
drive it above 5 mph (high revs but
speedometer won't increase beyond a
certain point). It was running great while
idling before I messed with the tps sensor (I
unplugged it and plugged it back in while
idling). Now it rough idles reeeeally bad and
will stall unless I give it lots of throttle. After
I give it throttle it will idle without stalling. I
have no code checker. I know my pcv valve
is probably clogged because of all the carb
buildup. Help?! This momma needs to get
back to school!