Ok, here's what's been happening. About a week ago my car's temp gauge shot all the way up on the highway, but once I slowed down due to traffic. This was the first time it was higher than the normal 40%. When I got home I checked it out and the upper radiator hose was hot, they say if the therm. is bad then the upper hose would be cool. So I thought it wasn't the therm. So I went home and drained the system and flushed it, found that the reservoir hose was not connected, so I reattached it. The thing ran fine for about a week. Then I went for a drive to the beach, about 45 minutes each way and everything was ok. Then in the morning I noticed a dried puddle under the car. I checked the antifreeze level and it was low so I refilled. But then as I was leaving in the morning to work, not even two miles away, and the car being on 5 minutes the temp gauge shot up all the way. Kind of strange since it normally takes a while to wrm up to 40% in the morning. So I rushed home and when I parked anti-freeze just started pouring out like an open hose. As I looked I noticed it was from the radiator cause it was way up front right over the bumper. I figured my Rad. busted. I went out and got another one, from the junkyard. I put it in, drove the car around a while and it was fine. Then I drive to work in the morning and once again as I hit a patch of traffic the temp gauge shoots up, so I get to work and check it out, no leaks just my reservoir is full to the brim. Seems like the overflow wasn't being sucked back into the system. So I wait till it's cool and check the fluid, low, so top off. I drive home and it's fine even through traffic, but I get to my town and hit a light and bam, again temp goes up. So I get home and check and check, and I notice that one of my fans was running backwards. I have both running continuous, so I fix the fan and wait till the morning to check it. The next two days it runs fine. Last night I get to a gas station in my town and smell anitfreeze so I check and seems my cap is leaking and I could hear a hissing sound coming from it and my reservoir is overflowing a bit. So I go the very next morning (today) to the auto parts store and buy a cap. As soon as I put it in I notice the difference. So I think everything is fine, I go to work and it's great even in traffic. But then I get to work and put it in Park and BAM the temp gauge shoots up again. I hit the throttle a bit and it starts to go down a bit. I check the cap it's fine no leaks, I check the rad. no leaks, I check the reservoir, still full. I check the hoses and they all feel warm. OK... WHAT THE HECK COULD IT BE!!!!!!!!!!!!! My fans are on, my rad. doesn't leak, my cap is on tight no leaks, no hoses leaking that I could tell??????????????? Help ME Please!!!!!!!!!!!!!!!!!!