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I have a 1991 camaro rs mine is doing the same thing after it overheated once. You might want to check your intake manifold that's what i hae to replaceAnswerbad water pump would be my guess or your engine isn't getting enough air to keep it cool or the fan isn't coming on to help the air flow around the block to cool the radiator or the radiator is clogged and isn't putting out enough coolant to the engine or your thermostat is stuck and is definitly not allowing coolant through could be one of 40 different reasons but those are the only ones i can think of at this point.
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โˆ™ 2011-09-14 08:47:00
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Q: Your car does not overheat while going 70 mph but when you go 75 it overheats why?
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Related questions

Why would a car overheat going up hill?

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.


What is wrong when your temperature gauge goes up in a car?

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


Why does a car overheat when there is still antifreeze in it?

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


What is the temperature at which your car overheats?

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


What happens if you lose oil pressure?

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


Jeep overheat when going through car wash?

Electric fan or fan clutch has failed.


How could you tell if the water pump is going bad?

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


What happens when your car overheats to the point that it stops?

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


If car overheats can it catch on fire?

YES


Will a car overheat in the winter?

no, it will not


Why does your car overheat while driving?

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


What does it mean when you car overheats at high speeds and when stopped rpms go up and down while in neutral?

check egr valve

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