Operating temperature

[Steebs]

I have a 99 nissan maxima when i drive around town my car heats up to normal operating temperature but when i drive on the highway it drops to cold on the temperature gauge.

Topic

[dreamer2355]

I would make sure you have the correct thermostat installed in the vehicle.

It sounds like you may have an over cooling condition.

Do you have a scan tool that cans how you actual coolant temperature? Does the heat work correctly?

If you suspect air in the cooling system, check out this ETCG video –

http://www.youtube.com/watch?v=zUpXgAJ1 … t3EVppbf88

[Steebs]

i do not have a scan tool that can do that.
our winters are pretty cold up here.
the heat only works when the car is at normal operating temperature or fairly close to that.

[dreamer2355]

Ok, i would try bleeding the cooling system first to make sure you dont have air in the system if you are having heat issues.

[college man]

I would start with checking the coolant level with the car cold. If full then I would replace the thermostat. it sounds like its stuck open.
good luck and keep us posted. C8-)

[EricTheCarGuy]

+1 on a possible thermostat issue but also make sure there isn’t any air in the cooling system.
http://www.youtube.com/watch?v=zUpXgAJ1 … ure=relmfu

[Author]

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