I had my radiator cleaned out of the car, I flushed the block, put in a new thermostat and radiator cap. Filled the block up with Dexcool and distilled water, filled up the radiator next, and then put some in the overflow.

I start the thing up, and as it warms up its pushing out a bunch of coolant through the overflow, and it continues to do so all the way to the gas station.

So, did I get a bad radiator cap? Why would the system push out water, shouldnt the water from the block go into the radiator and the water in the radiator go into the block?

It will stay cool, it wont overheat at least, but the temp will go up as soon as I stop, and down as soon as a move.

 

Umm I am kind of new but just to suggest, you may have air in your system or a leak for air to enter.

Try bleeding air out of the line by opening the bleed (****) valve. Open it while the car has just turned on until a steady stream of coolant comes out. I think its normal for the system to push coolant into the reservoir when the pressure gets high inside the system.

 

try bleeding the system & then try replacing your rad cap.

 

Did you overfill the resivor? I did and had most of the rad. spill out unto the road through the resivor. Got the car stopped as the temp needle was in the red. Saw that the resivor was to the top, let it cool a bit, popped the rad cap and the entire resivor emptied into the rad. Filled the rad and resivor to normal, bled the air and it hasn't happened since (about 3 months ago.)