When your temperature gauge reaches "H' it may too late to
prevent a major breakdown. Knowing the symptoms of an overheated car and how
they occur may be the difference between being inconvenienced and
Identification:---Other than a low oil level or low oil
pressure light, there is not a more significant part of a car's instrumentation
than a rising temperature gauge or a glowing "Hot" light. These
lights are really the only confirmation a driver has that his car is really
overheating. It is the identification of the symptoms of an overheating car
that enable the motorist to avert a badly damaged engine. Overheating is always
a traumatic event for a car's engine, which makes the early identification of
the symptom an important addition to the informed motorist's tool kit.
Stuck Thermostat:--The car's thermostat is a valve that controls coolant
flow from the engine block to the radiator. When the engine is cold the
thermostat remains closed so that the coolant can reach operating temperature
quicker and also provide heat to the passenger's compartment. The thermostat
has a spring on it that moves depending on coolant temperature causing the
thermostat to open. Sometimes the thermostat fails to open thus restricting
coolant flow to the radiator where it would be cooled down. This condition is often
the cause of overheating. The symptoms of this cause would be a rising
temperature gauge and possibly the loss of heat inside the car.
Restricted Radiator:---A car's radiator will have thousands of gallons of
coolant passing through in its lifetime. Along with the coolant comes
particulate matter in the form of corrosion breaking loose from various parts
of the car's cooling system. These contaminates collect in the tubes of the
radiator reducing its efficiency. Extensive "plugging" in the radiator
will cause the car to overheat. The symptom of this condition would be a rising
temperature gauge which goes up when you accelerate.
Coolant Loss:--A car's
cooling system is a closed loop system. You are not supposed to lose coolant.
Sufficient coolant loss will cause the engine to run hot because engine is
heating less coolant to higher temperatures. The symptom of overheating induced
by coolant loss would be a pool of coolant on the pavement when the leak is
external. Steam under the hood as the lost coolant hits hot parts of the
engine, or a rising temperature gauge in the case of a undetectable engine
related leak. Of course, the gauge would also go up if the leaks were not
Deteriorated Water Pump:--Cars
use a belt driven pump to push the water and coolant mixture through the
cooling system. This part is called the water pump. Rarely the impeller that
draws the coolant through the pump will rust away making it impossible to push
any through the system. If this occurs the temperature gauge will climb and coolant
will boil over in the radiator.
cooling fans are electrically driven. Some are driven by fan belts. If a belt
breaks or the electric supply to the fan is interrupted overheating may result.
Electric fans are tuned on thermostatically when needed. When the car runs at
idle for extended periods or the weather is extremely hot, a failed fan will
cause overheating otherwise it serves as a standby assist to the rest of the
cooling system. In stress conditions an inoperable fan will cause the
temperature gauge to rise.
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Mar 19, 2010 |
2001 Hyundai Accent