Your car does not overheat while going 70 mph but when you go 75 it overheats why?

The engine works hard and produces a lot more heat than when the car is driven on a leveled road. The car is usually driven slower on the uphill and there isn't as much air cooling the radiator. But the main reason it overheats is that the cooling system is malfunctioning.

Generally, if your car overheats with the proper level of antifreeze, either your water pump has gone bad (not circulating fluid), the thermostat is stuck, or your radiator is clogged up inside. -NAPAman

It usually catches on fire as seen at Monaco with one of the Marussia's. It can happen when the car is stationary for too long as they have no fans. Only air cooled radiators. The engineers can see the data so they may ask to save the engine before it damages itself but it really depends how quickly it does overheat. When the car overheats, damage can be done to fuel lines, exhaust systems and…

Your car is starting to overheat or your thermostat is going out. Get it checked.

your car overheats. Your oil is not going through the cylinders creating lots of heat

I have no idea what would cause a car to overheat emitting dense steam. When a car overheats, the first thing I check is the thermostat. When a car emits steam, I look for the place where the steam is coming from. I usually think two different problems are happening at the same time.

Worst case scenario--the engine has seized and you are going to be buying a new one.

Each car overheats at a different temperature you need to look up and find out on the internet

Electric fan or fan clutch has failed.

your car will overheat, there will be low pressure on your system.

check egr valve

why does my car overheat as i stop and go?

Yes, low coolant will cause it to overheat without the AC; that is not the only reason that will cause overheating however.

If car still overheats after changing the thermostat the water pump the headgaskets and the radiator what else would cause it to overheat? From what you describe it sounds like you might have an air lock in your cooling system. I would recommend that you bleed any and all air out of the cooling system. The bleeder valve is located on top of the engine. Once engine starts to overheat or when you can hear…

Need to change your thermastat i have done that but still over heats when driving

yes a thermostat cause the car to overheat

You will know of your thermostat is going out when your car overheats, then turn on your heater really hot on full blast, then the temp will instantly drop. This is a sign of a thermostat gone bad.

Your motor oil going bad would cause that. That is in the crankcase, not the transmission.

Check coolant level Replace radiator cap Radiator may be clogged Make sure air flow through radiator is not resitricted

Most cars have a check lite sequence at start to prove they work properly. This assures that you'll have a valid indication if the engine overheats. It also means that if the lights don't come on at start that they MUST be repaired.

The car will start. If it is malfunctioning, then the car will overheat. If the car overheats, it may not start again for awhile as a safety feature, or it may not start because of heat damage. On newer cars if the car is cold, then the electric fan will turn off. It only turns on when the antifreeze needs cooling. On older belt-driven fans, the fan runs all the time.

you have a phase 1 ej25 engine with blown headgaskets...don't continue to overheat it...get it fixed pronto

mixture of the radator fluid This answer is possible but it is not correct and is a poor choice. There are a number of reasons why a car's engine overheats and the original question doesn't give enough information about the car and its overheating symptoms to deduce the answer to being a mixture of radiator fluid. It's not a good way to answer at all other than it being a guess. The engine can overheat…

Shorts out and overheats or has too much resistance for some other reason and overheats.

Car overheats, your heat in your car stops working

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…

the car will start overheat because of loosing coolant or clogged heater core, also you will have no heat inside the car,and if the car overheats the engine will be weak and loos lots of power and overheating will cause other parts that can't take too much heat, also if the car heated up really bad might blow the heads/intake gasket, if your heater core goes bad and have no money to fix the car…

Poor coolant circulation in the cooling system.

it can..rain has NOTHING to do with your radiator or the thermostat

no, it will not

sometime the fan do not work which can cause the car to overheat. Also it can be a fuse for the fan. Check your thermostat.

Your car will not neccessarily smell like Antifreeze if your water pump is going, in my personal experience it sounds like your HEATER CORE is shot. That is what usually makes that smell, unless you spilled some on the engine. Also, if the water pump was going the car would run hot and/or overheat.

Oil on engine burning as engine overheats. Sort of common sense, don't ya think?

If you temperature gauge is going up and down then you may have a problem with your sensor. You should take your car to a professional to ensure that you don't overheat your car.

your cooling fans are not kicking in. They make have clutches that have gone bad. they need to be replaced. Also check the themostat

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.

The amount of load it is hauling, whether inside or like pulling a trailer. Also using the air conditioning while going up very long grades on the roadway will cause overheating as the engine has to work harder going uphill and adding the drag of the air conditioning pump only makes that more difficult.

Only until it overheats.

Your question is not clear...

it means that the car wasnt overheated enough to gt to that point

It is almost always going to be the car that hit the other car that is at fault. It is a presumption that a car that hits the rear of another car is going to be at fault.

check the water level, if its okay then you probably need a thermostat

when the car overheats or you have poor heat coming out of the heater.

possible radiator resrtiction

To give more info, the car surges before it dies. I can actually keep the car running if I tap the accelerator when I feel it surge. The car also dies at idle. I don't know if this is related or not, but the car easily overheats even with new coolant and thermostat.

No beaxause it can overheat and catch fire No beaxause it can overheat and catch fire

Water Pump or Thermostat. May have to change water pump to replace thermostat.

If oil pressure is low it certainly can cause the car to overheat. This is because the mechanisms are not being properly lubricated with enough oil.

Your car is going to be totaled out.

Turning the heat on would actually lower the engine temperature. It's a well known trick if your car starts to overheat. Having the A/C on causes a power loss to operate the compressor, which would also cause engine temperature to go up due to the hot air from the condensor going through the radiator.