Engine overheats When a car or truck overheats idling, in town, on the highway, while towing, etc. it is important to find out the reason to prevent engine damage. First, with the engine cold, make sure the radiator is full of coolant; if it is low, fill it and keep the radiator cap off while the engine idles to insure all air is bled out of the system. Check the coolant level daily; if the coolant goes down without visible leaks, it may be a head gasket starting to leak which will also cause the heater to blow cold air due to the lack of available coolant. If the coolant stays full, but the car continues to overheat, the next step is to replace the thermostat in the engine and flush the cooling system if that has not been done over the last few years.Buy a thermostat at a parts store and a PRESTONE flush kit which has excellent directions on the package.After completing these steps and the vehicle still overheats, have your cooling fan sensor/switch ( if equipped)checked out to insure it is coming on. Water pumps are seldom the cause as they are mechanical and will continue to work until their bearings give out. Finally, the radiator itself is often the problem as it tends to build up corrosion internally which prevents it from transfering engine heat to the coolant. Remove it and have it 're-cored'. One of these steps will solve the problem.
Try replacing the 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.
check your fan clutch if its weak it will overheat
Mine was caused by a blown head gasket. Could be a defective thermostat or a plugged radiator too. Would need more detail about when it overheats and how you know it is overheating to give a better answer.
theyre maybe an air bubble in the block causing it to overheat,or it could also be a bad water pump
A Nissan Frontier may be overheating because the radiator is cracked. A thermostat failure can also cause it to overheat.
I had replaced the water pump and radiator. This had continued to overheat but not as bad. After replacing the head gasket it was finally fixed. I was able to answer my own question only after replacement.
generally if an engine overheats, but then does not overheat when heater is turned on, is a good indication that the engine thermostat is stuck and needs replacing
Yes it can cause it to overheat but first check your thermostat. That would be the 1st cheapist thing to do before you did anything else. I got an 85 regal(overheating) and the thermostat or the heater core is the problem im getting them both replaced tomorrow and will let know of how it runs.
if the pump and thermostat have been replaced on a 2001 malibu and it overheats and the heat doesnt work now but the air does. do it need bleeding still , will air in the line still cause that problem...
Most of the time it is because the thermostat has gone bad and is not opening at the proper temperature. Cure: replace thermostat. If the thermostat has been replaced, flush the radiator. Buildup of residue in the bottom of the radiato0r will cause overheating, but it is maintained over heating, not temporary.
There could be many reasons. Not enough coolant or bad flow, faulty thermostat, low oil. If the coolant freezes then it will overheat. If your car continues to overheat then you should have the coolant flushed and thermostat replaced.
My 2000 would overheat at idle; in park & slow traffic. Ran normal on the highway. I 1st replaced the fan relay everyone has been blogging about, engine still overheated. Next attempt for victory, I replaced the temp sensor switch; defeated again. I then replaced the thermostat & haven't had a overheating incident since.
A bad water pump or thermostat can cause an engine to overheat. A plugged (clogged) radiator or heater core may also cause an engine to overheat.
Does that mean that you replaced the thermostat AND the sensor? If not, you really need to replace the thermostat. A sticking thermostat can cause temperature swings and potentially overheat the engine. BTW, BMW engines tend to have serious problems when they overheat. Don't let it overheat or you might be buying a new engine.
could be your thermostat is stuck or perhaps and needs to be replaced.
Assuming it did not overheat before you replaced thermostat and water pump you may have installed the thermostat backwards. It is also possible the cooling system wasn't refilled properly and was air bound.
There are numerous reasons why a Nissan Altima will overheat. One such reason is a closed thermostat or the radiator may be leaking.
Water Pump or Thermostat. May have to change water pump to replace thermostat.
Is vehicle actually overheating? Could be a bad temperature sending unit or gauge Check temperature with a thermometer If thermostat does not open vehicle will overheat
Did you make sure that you are putting the themostat in correctly? If you put it in backwardthis can sometimes cause this problem.
One reasons a Subaru Forester may overheat is because the radiator may need replaced. Another reason could be the thermostat.
you need to burp the cooling system
just because the thermostat is new doesnt make it good your supposed to boil it in water to see if it opens and closes so it may be bad. if your car is low on oil it will overheat also or start the car and watch the radiator hose it it collapses then the hose is clogged and the water isn't flowing right which will cause it to overheat.
because the water pump is not working properly....