Hey guys, i really hope u can help me out with this one. I just put a new motor in my car, and im having a problem with engine speeds under 1000RPM or so. It runs like crap in Park when cold and stalls, and stalls if i try to drive it cold. If I blip the throttle ( like touch it to move up a little at a light or something), the car wants to die, and sometimes it does. I've replaced/checked the following:
EGR
Coolant Temp Sensor
O2
Oil Press. Send.
compression (150 psi)
ignition
Fan switch
timing is right on
All were good. It runs fine while driving. I was having this problem before the new motor, but it wasnt nearly this bad. I think its running rich, but what else can i check?
Thanks.

 

BTW, I forgot to mention theres a new fuel pump, filter, and new air cleaner.