Is the thermostat in backwards???
it depend on where u live hot or cold weather... german cars are made for cooler weather... this will efect the way ur car will run
Ingeneral, the fan will run only if the temperature of the radiator is above the normal range. If the fan is running, then the radiator must be over temp unless the radiator fan thermostat or it's relay is defective. If the radiator truly is over temp then you have a larger over-heating problem You state the thermostat was replaced. if you replaced the fan thermostat then either the radiator really is over temp and it is doing what it should, or there is a problem with the thermostat-fan relay or switch. If you replaced the engine thermostat that controls the flow of coolent between the engine and the radiator, then that probably wasn't your problem and you should look elsewhere for an overheating cause. I would start by determining if the engine actually is overheating or not. If it is, I would look for coolent system problems like the engine thermostat (if you didn't replace it already), water pump, leaks, scale build up in the radiator, or blockages in the system. If the engine isn't overheating then I would consentrate on the fan, fan thermostat and relays.
If you have an old ISUZU Trooper, the radiator thermostat may be not working. Therefore, it will not let cool water from the radiator into the hot engine, even if the radiator is full. Have the thermostat checked and replaced, if necessary. Good Luck
Perhaps plugged radiator - have it boiled out or replaced
This question is not complete. . Need to know if you've replaced radiator, thermostat, hoses etc. Are you asking this question *after* yo checked the thermostat, changed, added or drained the system?
first of all, do you have the right thermostat? ie: winter, summer. if so i would get the radiator checked, it may be getting pluged.
well the Honda civic has main problems with the thermostat and radiator considering the year if it has never been replaced you should replace the thermostat then radiator cap and if this doesn't help you can do a pressure test to see if you have a leak or blown head gasket. the car could also have a bad water pump if this is the problem it will only take Min's to over heat the engine. you could havethings blocking your radiator i would have this flushed or replaced. also it could be your heater core hope this helps
In most cases if your follow the upper radiator hose from the radiator to the engine, the thermostat would be located inside the "gooseneck" at the engine end of the upper hose.
Follow the top radiator hose from the radiator to the engine . The engine cooling thermostat would be in a housing that is bolted to the front of the intake manifold
If your heater core wasn't leaking at the time your radiator was replaced , then ( no ) That would be two separate jobs
Follow the top radiator hose, to where it intersects with the motor. This would be the thermostat housing. Remove this, and the thermostat will be exposed.
I would suspect the thermostat is the culprit. Replace the thermostat. definately replace the thermostat, get a new gasket and all. Also, start the car cold and see if the inlet hose to the radiator warms up evenly. if it gets really hot on the engine side of the hose and is still cool by the radiator that means that there is no flow and either the thermo is installed wrong or something is clogged
If the coolant is brown, it has broken down and needs replaced. You could also have a failed thermostat, plugged radiator, inoperative fans,...........