1997 honda passport is leaking water from the back of the engine on the drivers side close to the firewall

SOURCE: leak onto floor passenger side from neck of ac drain through firewall

It's not your heater core. If your heater core is out it would leak antifreeze. My wife's 97 Grand Cherokee had the same problem. It is condensation from your AC coming leaking through a round hole in the AC unit at the firewall. Pull the carpet back and dry out underneath it, there will be a lot of water and we had to leave the carpet pulled back with a fan blowing on it all weekend to dry out. I fixed this about 8 years ago so if I remember correctly, the was a plastic part of the AC at the firewall that had a hole in it that the water was coming out of, I could see leaves and debris in the hole so I know it was part of the drain system. I cleaned out what debris I could and used a cone shaped peice of rubber and twisted it in to plug the hole and tapped over the plug to ensure that it wouldn't back out with vibrations, etc. After you dry everything off start the engine and turn the AC on max, you'll be able to see the where the water is leaking from after the AC gets cold. Hope this helps, it drove us nuts for a year before we figured it out and the wet carpet smell wasn't pleasant.

SOURCE: My 1997 Pontiac Grand Prix GTP has an oil leak

Try some motor honey. It can be bought at most part stores, advanced auto, autozone, ect. It worked for my 95 Grand Am when I had a leak in my oil pan gasket. Hope this helps

SOURCE: 2002 Honda Passport, drivers side window goes down but not up??

It would be a switch. Try pushing the switch down hard and wiggling it. It may work which would indicat a switch. Since one direction works It has to be the switch ,

SOURCE: 1996 Honda Passport overheating

It sounds like it may be a stopped up radiator or a possible blown head gasket. You need to take it to a repair shop and have the radiator flow checked and also check for the presence of hydrocarbons in the coolant which would indicate a possible blown head gasket or a cracked cylinder head.

SOURCE: Water Pump leakes from steel tube.

when installing new o-ring on tube, lubricate o-ring and stick it in water pump. Then pull pressure back on tube and then tighten hold down clamp. problem solved