Have this unit at shop, no codes tested coils tested electrics and tested pressures at port 1 and 2 and teed in at pumps. the odd part about this is if i put the unit into relief on a different function and double it up with the dead function it will work? this is where i am stumped i cant see a manifold diagram for flow path for this unit as it is a Z45/24 ic with ford motor. the odd thing is one of the functions doesn't call for high rpm either. any info or pointers on this of any other tests or other spots to tee into for pressure tests. i am leaning toward a flow valve or check valve but not sure one could effect all of the functions at the same time.