Its important to warm up before working out because if you don't warm up there is a higher possibility of pulling a muscle or cramping up because your body will not be physically prepared to work out
Governor hunting or surging is a problem that causes the engine to constantly speed up rapidly and then slow down rapidly.
A defective thermostat.
It could be the thermostat on the engine. If the engine does not warm up adequately the heater will never blow hot air.
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The engine will:Not warm up at all, This should set a code on the computerWill warm up very slowly, This should set a codeWill only warm up to a lower temperature than it should, this may not set a codeThe engine may warm up properly but continue to warm up until it overheatsThe engine may warm up until it is either at the correct temperature or too hot then cool down until it is too cold and repeat the cycle.All of these are symptoms of a bad thermostat.
Yes, because when water evaporates it is usually warm when the sun is up and shining - so warm water evaporates more quickly than cold water because it is warm.
yes, as the particles of air are heated, it moves more rapidly, which causes it to expand
Thermostat is stuck open. Replace it.
Your car has to achieve operating temperature before it functions as it should. Your heads which contain your valves are cold and don't move as easily as they do warm. This is why your thermostat doesn't open up until it reaches either 185 or 192 degrees. If you have a cold-blooded engine, you have to wait for it to warm up. You can quicken the process by revving the engine slightly. If your car is not cold-blooded, the best way to warm it up is by driving it. If your'e engine is taking a long time to warm up, your thermostat may stuck open, causing the antifreeze to cool the engine before it is even warm. Hope this helps
Most likely a defective thermostat.However,remember that there is a lot of metal in the engine block that has to heat up too.
A warm up is important as it allows the resting muscles, joints and heart under normal activity to become active and supple enough to accomdate the exercise that the body is about to undertake.