Installed a new water pump and serpentine belt and now the car won't start? on 1994 Jeep Grand Cherokee
Did not disconnect battery.

Removed the fan shroud.

Removed the serpentine belt (I did remove 2 pulleys to alternator and the one to the right and put them back on. Not sure if this would throw anything off?)

Removed old water pump by taking out all bolts (I think there were 7 total), disconnecting rubber hose containing radiator fluid to the left and rubber hose on top of water pump, and metal hose to the right (unsure what this was).

Connected new water pump and reconnected all hoses and bolts.

Put on new serpentine belt.

Put fan shroud back on.

When I went to go crank the engine, ignition cranks, but will engine will not start. I used jumper cables from my other car, but it seems it won't hold and dies really fast.

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I did some research online, and saw some people saying that I could have messed up the timing? Is this correct?

Losing power fast, did I mess up something with the alternator?

Any help would be great. Thanks.