I need Help....Fast (cooling system)

[TurboBlue]

ok, so heres the rundown....the car has a new Radiator, Thermostat, Cap, ECT sensor (ECU) and no leaks in the system at all....

My problem is that the car is constantly filling up the overflow tank, right to the very maximum, and then it proceeds to run out the over flow drain tube. Eventually this leads to a loss of coolant from the block and over heating problems. I really dont want this...motor has about 700 miles on it.

I need some help, i dont know what to do, any help is greatly appreciated. Thanks

 

[ken inn]

worse case scenario would be a head gasket, especially with a new motor. if the radiator cap is bad, it will fill up the resevoir, but not suck it back in when it cools. so, if you keep filling up the radiator, it will keep filling up the resevoir. just because the radiator cap is new, dont mean it aint bad. they have tools to test the caps. if it just keeps pumping out the coolant, even when you first start it up(on a NORMAL system, the coolant dont go to the resevoir until it is really hot), it looks like headgasket. with only 700 miles on a motor, i hope you got a good warranty.

 

[TurboBlue]

well the coolant is always green, oil has no coolant in it, and the exhaust has absolutely no smell of coolant...

 

[psychlow]

Blue -

I bet you just need to "burp" the system to remove air bubbles - this is what I had to do to prevent my coolant from boiling and getting pushed out of the overflow. I've had to do this to both 1G's I've owned, otherwise the coolant boils out.

Fill the overflow tank up just enough to keep the line submerged in coolant. Then, remove the radiator cap when the engine is completely cooled, and fill the radiator up until it reaches the top. Then, start the engine. As the coolant circulates, the level will fall as the air is released - keep filling it up. Eventually, the coolant will start to want to push out of the radiator when the engine starts heating up - when this occurs, cap it off, you're done.

You may have to repeat this process once more, but I haven't had to yet to stop it from boiling over.

 

[paulnyc2001]

i had this same problem, it ended up being the water pump, get that checked out soon!!!

 

[moonstation2000]

i had the same problem with my car when i first bought it. it finally overheated when i was stuck in traffic and i blew the headgasket.
long story short - it was the radiator cap. it wasn't holding pressure. buy another and replace it, they're cheap.

 

[sixer]

..... i bet your overflow bottle is below the rad cap!!!

get that car runnin, and by the time you got that thing going i will have my truck ready for a rip!

 

[desolateboosted]

The problem is the radiator cap spring is weakening or the rubber seal on the radiator cap is busted and the radiator cap needs to be replaced. Start right there, that should fix it.