Removing my electronic fuel injection.

SOURCE: honda passport 95' has started to overheat. Change

you have to bleed the cooling system, if it does not work then you may have cracked the head.

SOURCE: 1997 2.2lt Odyssey has massive oil leak at back of

Could actually be your oil filter itself. Try replacing it first, leaks around the gaskets of oil filters is not uncommon and I am not sure if it is from being installed too tight or not lubricating the rubber ring on the filter, but I have had this happen before and lost a lot of oil.
You will also want to check any sensors on the back of the block if there are any.I ran into a toyota this last week that was leaking oil from the oil pressure sensor on the block, so might be worth looking into.

SOURCE: We have a 2005 civic

Could be the drain tube is partially clogged. It is usually located on the fire-wall or down towards the floor pan under the car. It is usually close to where the A/C lines go thru the fire-wall. About 1/2 inch diameter sticking straight out but may have a 90 degree elbow pointing down.
Also, it's been extra hot and humid all over and moisture could be freezing inside the unit when on MAX A/C, then suddenly melting when switched to normal. This opens the outside air door and allows warm/hot air into the unit instead of recirculating the cold air inside the car. The drain may not be able to handle a large, sudden quantity of water.
Perform a "driveway" test. Open the hood, start engine and run the A/C on normal with the windows or doors open. Locate the drain tube by looking for water dripping. Once located twist 2 or 3 pipe cleaners together and verify the tube is clean. Then close the doors/windows and switch to MAX A/C. Check for water dripping. If it stops dripping, water is freezing inside and now you know why!

SOURCE: leaking coolant under the manifold

get under the car move things on your way to get to the hose and take 2 clamps off no big deal.