Check the compression. If you have one cylinder that is low, it could possibly be a damaged head gasket that leaks into the coolant jacket. When engines overheat the head tends to warp and the head gaskets fail. If you want, you can purchase a test strip that will tell you for certain if you have carbon monoxide in the coolant. Carbon monoxide is the indicator that the head gasket is leaking. If you've damaged the head gasket on ANY engine from overheating, the only real option is to pull the head(s) and have the head resurfaced then replace the head gasket. But before you do that, check the coolant with the test strip.
water pump. thermostat.
The radiator may be plugged. Take it to a radiator shop.
Remove the Radiator and have it serviced if they are able to. If not you will need to replace it, would be a good time to replace the Radiator hose's as well. Hope This Helps.
If it's overheating, it cold be thermostat, radiator or possibly other problems. If it's not overheating it could be the coolant level sensor.
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.
most common cause of overheating is improper oiling. Check to make sure you have enough oil, and run a 1/2 cup of Marvel Mystery Oil in your gas and see if the heating comes down at all This is assuming that you already looked at the radiator hoses, waterpump, and thermostat.
Even though you have already replaced the thermostat, there are other issues that can cause your Nissan Maxima to overheat. Your fan may be stuck and not operating as it should.
most common cause of overheating is improper oiling. Check to make sure you have enough oil, and run a 1/2 cup of Marvel Mystery Oil in your gas and see if the heating comes down at all This is assuming that you already looked at the radiator hoses, waterpump, and thermostat.
I have already replaced the radfiator,cap,thermostat and confirmed water pump works. cools fine w/o radiator cap ,pressure builds and temp. rises when cap in place.
Would need to know if car was overheating before waterpump and thermostat was replaced.
mine was the overflow tank. was cracked at the bottom so you couldn't see. it cost me 27 bucks
This may mean there is a weak hose OR some sort of blockage in the radiator or cooling system.