I have a 1998 Jeep, Grand Cherokee. After running the a/c, when I turn the engine off, alot of water and coolant run out from under the front of the engine area. It does not happen every time though. The a/c seems to work fine, blows cold air. I have no idea what is going on. I need the a/c. I live in phx. Az. and its hot here. Please help.

All a/c systems collect condensation (more humidity=more condensation) that drips onto the ground under the vehicle. On some days it can leave a puddle.
If the puddle doesn't look green (antifreeze color) don't worry about it.

yea if it doesn't look like coolant (green) and it si just water all it is is condensation on the AC lines, b/c the lines get really cold, and b/c of the hot humid air it causes condensation on the lines. don't worry about it.