Red hot summer, red hot engine temp. Options

[tomazws]

I was driving on local street (grandpa chillin' style, shifts at around 2K~2.5K) when I noticed my temp gauge went rocket high. Immediately, I stopped the car on the side, popped the hood and let it chill for a bit. Then, I poured in about half a gallon of 50/50 (I have a gallon left over in the trunk from I forgot when), and tried starting the car. Everything seemed normal. I started driving the rest of the way to work and everything seemed normal...

Q's:

I poured the 50/50 into the tube until spill, it's about half a gallon I poured in. Does half a gallon of coolant really make an engine overheat?

Or

Would it be a faulty sensor?



This is the first time ever the temp gauge wasn't in the middle.
It should be about 86 ~ 90 degree outside.

[1ofAkindCeli]

Dam foo, that seems awkward for a celi to overheat, ur celi MUST have sumthing wrong with its cooling system, i say ur fans arent working or maybe juss one, the antifreeze isnt the problem, if u were half full it is still enough for a toyota, hell yea it is lol ive ran mine with no water at all and i noticed it wen the temp gauge moved a centimeter, i got off the line, stopped and it was completly empty, it seemed like if it . OK ima give you an example i live close to the border n i pretty much go everyweekend and the line to cross the border gets a little long maybe 1-3 hrs. it is 115-120 degrees outhere for about 4 months and i cross the border with the AC on with no problems, my temp gauges doesnt move a millimeter, its awsome. But maybe ur radiator is jammed u should drain it a couple of times n take it to clean.