97 maxima shutting off while idling or slow speeds

I've replaced the knock sensor , cleaned &
made sure the idle air control valve was
working , removed &. Cleaned the egr tube
& sensor ,new o2 sensor ,new coolant
temp sensor , new intake air temp sensor ,
new map/baro sensor ,removed & cleaned
out the throttle body & as far I'm the intake
manifold I could, new throttle position
sensor , new evap charcoal canister & the
purge valve that connects to it
,dísconected all the hoses & sensors &
cleaned it all out while under there, new
radiator & thermostat, new spark plugs ,re
did all my grounds & ran seafoam in the
tank & the intake a few times ..after all this
there is no more CEL codes ..BUT the
engine STILL tries to stall while idling or
slowly driving or at a light (sometimes)!!??
any suggestions would be greatly
appreciated