If your car is bubbling at the radiator fill area it has more than likely blown a head gasket , if you remove the thermostat temporary just to run to see if this continues , you should be able to see that the water is flowing if it is still bubbling it will be more than likely combustion gas escaping the combustion chamber into the coolant system indicating a problem like head gasket blown
If the vehicle overheated prior to replacing the water pump, it is possible that it damaged the radiator, or the thermostat could be defective.
SOURCE: Water pump problem?
You need to make sure you don’t have an air lock. Find the bleeder valve for the coolant system and release the air. If you can’t find the bleeder, find the highest hose for the coolant system and make sure coolant is flowing through it.
SOURCE: 1998 aurora
I have had this problem with my 98 aurora and have replaced all the same components. Temp gauge routinely shows 200 on highway (Fine) but in the city in stop and go will get to around 245. I installed a switch to manually turn on the cooling fans by connecting the ground to pin 86 in the relay for the fan(s). Otherwise the fans will not turn on to 245. This fix works but would like to know an actual solution.
SOURCE: 96 ford crown vic over heating
it seems you have to seperate issues here. fiirst let's start withtthe over heating. you stated that you have replaced the pump,thermosta,fan,clutch,all the hoses, and core. now my question to you is did you route the belt so it's circulating like it should? is it steaming out from under the hood? to be quite honest the vehicle should not even be close to overheating after driving only 3 miles. there is a possibilty that you have a bad sending unit for the temp if it is not steaming out from under the hood. your upper radiator hose is hot this tells you that the thermostat is operating as it should. the fan should be turning clock wise as you are looking at it from the front of the vehicle.when you fill the system with coolant make sure that you have the heater on high and to the hot setting. check to make open sure you have plenty of coolant and that the radiator is free of dirt and bugs.. now as far as not having anyheat in the vehicle check the fuse for your climate control. look under the dash and make sure you hooked all the cables for your fresh air door and blend door. when you changed the core did you connect the hoses in the right place?after you have checked all the hoses and the coolant is as full as can be and the heat is turned on to max ,keep the radiator cap off and start the vehicle wait for it to get hot check the upper radiator hose to see when the thermo stat opens you should see that the coolant should go down in the radaitor. do these things and check back with me on the results...please rate this help...thanks
SOURCE: 1996 ford contour gets hot , no hot heater or temp guage movement
Is your temperature gauge working now? That is of more concern then your heater as you wouldnt know if your engine was overheating until its too late. Your heater core could be clogged, they get clogged quite easily. You can flush them or replace. The part is inexpensive but on some models you have to take out dash to replace them, but on other models it only takes about 30 mins and a few bolts.
SOURCE: 2001 pt cruiser running hot after changing
Likely it's not a head gasket (yet) You should check your fans to make sure they are coming on properly. check that there are no leaves or debris stuck between the radiator and the a/c condenser and that the radiator is flowing well.
Even though the engine is running well after it gets hot, it is not good for the head gasket and can cause it to fail...take care of the problem asap!!!
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always start small, sounds like the thermostat check that first , if it's stuck closed it can not circulate threw the motor.
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