Did you get the right water pump they are directional.
V belts clockwise or normal rotation
Serpentine belts are Reverse
Check it out could be the issue
Sent from underneath my Jeep
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.
AF Jeep Club Tail #184