My Cherokee keeps loosing coolant. I keep filling the coolant reservoir, but then the next time I check it's empty.

I don't see any leaks. I also checked the oil and it's not mixed with coolant.
It has a new water pump, theromostat, and radiator cap.

What's going on here?

 

Mine is kinda the same only haven't replaced stuff yet. How much for pump, res tank, thermostat and rad?

 

they were all kinda cheap rad cap and thermostat were under $50. Had the water pump replaced for about 150

 

Could be the intake gasket? Can you smell burnt coolant? I was told if it's not a visible leak and your oil is fine the that's a strong possibility.

 

any wetness on passenger floor(heater core) have cooling system pressure tested maybe auto store will do it for free

 

Doubtful it's a manifold gasket. Would ether suck or blow!

Wet/dry compression test. Have it at least warm if you can. Do five or seven strokes with all the plugs out. Write down all the numbers, one through six. Add a couple tablespoons of oil into all the holes. Crank it a bit to make sure that oil got around into the rings. Do a second set of numbers.
If compression comes up on a cylinder suspect rings, if it stays low suspect valves or the head gasket.

By the way it will smoke allot after you put the plugs back and fire it up!

 

pressure test cooling system yet ? Do radiator cap also ....