My Car overheats even after a water pump replacement?

I drive a 97 Nissan Skyline. A few days ago, my car was very close to overheating. I drove it to the nearest gas station the next day and filled the radiator with a whole bottle of antifreeze. On my way to work, which is only a few miles down the road, the temp gage was back in the red zone. I noticed antifreeze leaking from underneath the car. I looked at it and the fluid was coming from the underneath side of my water pump. I took it in and had it replaced. I just got the car back today. I drove it from work to home (4miles) and i parked it for 8 hrs. Then i went to pick up a few friends and drove it around for about 20minutes and the temp gage is in the red again. I got it home and opened the hood. The upper radiator hose looked like it was falling off. i tightened the clamp, but it doesn’t stay on very well, even though it is tight. i am wondering if that could be the only cause for this to be happening. There is plenty of antifreeze left in the car.
okay, i was just checking it out. i have plenty of antifreeze in the overfill tank, but when i had the car on, with the radiator cap off, i didn’t see any fluid going through. does that mean there isn’t any antifreeze in the radiator at all?

27-13-3 Replacement O-Ring For Water Cooled Machine TIG Torch

Product Description
RAD64005874 Features: -Price Is For One Each -Minimum Order Of 2. -RADNOR FITS 27A 27B. -UNSPC CODE: 23171500. -TIG Torch Parts TIG Torch Parts welding support equipment.-27-13-3 O-RING FOR 27 TIG TORCH…. More >>

27-13-3 Replacement O-Ring For Water Cooled Machine TIG Torch

I need advice for a replacement fuel filter/separator for 2000 Johnson 115 outboard motor. model# j115vxsss?

Any advice on the best/recommended replacement filter and water separator as well as product #’s/links, would be greatly appreciated. By the way, I’m looking for this info for a friend who is new to boating and lacks web access as well. TY

How much 4 water pump,spark plug replacement for 1998 BMW328i 90kserivce?

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Can human urine be used as a replacement for gasoline?

…I can take a small sip of water before going to bed and by 2 AM it has turned into a quart. So, I’m thinking that if I drink a gallon, by morning I can fill ‘er up for free.

NOTE: An elaborate best answer awards ceremony requiring formal wear will be conducted May 23, 2008 at 9 AM on the Walmart parking lot at the intersection of U.S. Hwys. 77 and 287 in Waxahachie, Texas. You need not be present to win, but if you are there please bring a 5 gal. can of gasoline as a contribution in case this urine thing doesn’t work out.