because the engine in that car does not cool down
Could be your thermostat or your anti-freeze
The relay sensor is likely defective
In my experience with my Chevy it was a ground wire
A faulty thermostat might cause the temp gauge on the 2000 Nissan Altima to raise to hot when the car is not overheating. A faulty thermostat can cause the gauge to move up and down and might even turn the fan on.
The temperature gauge on a car fluctuates because the car's thermostat is opening and closing. The gauge goes up when the thermostat closes and the gauge goes down when the thermostat opens.
The particles in the balloon slow down as the temperature decreases cause it to deflate
is the coolant disapeering at all ?
When your temperature goes down, it can cause symptoms such as shivering, feeling cold, and potentially hypothermia if the body cannot regulate its temperature effectively. Low body temperature can also slow down metabolic processes and lead to confusion, lethargy, and weakness.
Sounds like the thermostat is sluggish to react to temperature changes
There are a couple of reasons this could occur.One could be that the temperature sender is defective and needs to replaced this is what makes the gauge on the dash show a reading.Two is if the temp sender is not defective then it could be a faulty gauge meaning the gauge needs to be replaced.Also a short in the wiring or bad connection can cause this.As long as you have normal heat temps when in the vehicle I would not think it is ur thermostat being bad.The only thing that may cause the needle to not be in the normal position is extreme cold but the gauge should show a reading.If the gauge does not move at all, I say it's more than likely the temp sender is bad in most cases.I would not rule out other issues but,most typical is the sending unit,and not the gauge or short or bad connection.I could elaborate on checking lots more but,this is alot to begin with.
Check your coolant level, and replace your thermostat