Car Repair World

How Does  Car Thermostat W ork Car thermostat function: The automotive Car Thermostat is a temperature controlled on and off valve. Any liquid-cooled car engine has a small device called the thermostat.Car thermostat sits between the engine and the radiator.When the temperature rises to a predetermined temperature, the thermostat opens up to allow the engine coolant to flow through the cylinder block and the radiator.  This flow is crucial to maintain optimum operating temperature for fuel efficiency, enhanced drive ability, and engine protection.You can say the thermostat reduces engine wear, deposits and emissions. See  the image shows how thermostat functions when engine is cold and when engine is hot Car Thermostat controls the engine cooling system.The coolant flow is reduced when the engine is cold, and the flow is increased when the engine is hot. Contrary to popular opinion, operating the vehicle without the thermostat doesn't make the...

Oil in Coolant Engine Oil Getting Mix With Coolant Engine Oil In Radiator Helpful Information These fluids may exchange places when these items fail due to pressures inside each system. Because engine and transmission oil pressure runs at about 40 psi and cooling system pressure runs about 18 psi oil is more likely to enter the coolant system rather than coolant entering the engine or transmission through the cooler. Step by step guide on how to troubleshoot and repair an automotive oil in coolant problem, this information pertains to most vehicles. Difficulty Scale: 4 of 10 Begin inspection with the vehicle on level ground, engine "OFF" and cooled off, in park with the emergency brake set. Step 1  - Many automotive engines utilize an oil cooler in which radiator coolant passes through to remove heat from the oil. When these coolers fail they allow engine oil to enter the cooling system and into the radiator. Oil Cooler Step 2  - To check for this condit...

Coolant in Engine Oil Coolant getting mixed in engine oil Helpful Information Coolant runs throughout the engine block, cylinder heads, intake manifold, (some applications) engine oil cooler (if equipped) hoses, heater core and radiator. Visit - Cooling system . The engine cannot run with coolant in the oil system, catastrophic failure will occur. Do not run an engine once is coolant is discovered in the engine oil. These repairs can be tricky because they overlap and it can be difficult to tell which one is causing the problem before the repair has begun. Step by step guide on how to repair coolant in the motor oil. This article pertains to all vehicles except electric. Difficulty Scale: 4 of 10 Tool and Supplies Needed Flashlight Wrench set Socket set Protective eyewear and clothing Begin with the car on level ground with the engine "OFF" and the parking brake on. Step 1  - To check for coolant in the oil first remove the oil fill cap and inspect...

Cooling Fans Working Of Automotive Cooling Fans Helpful Information The engine cooling fan is designed to move air through the radiator when the vehicle is at slower speeds or stopped. This air flow removes heat from the coolant created by the engine using the radiator as a conductor. An engine cooling fan is temperature controlled to only run when needed. All engines have a preferred operating temperature and need to warm up to operate at peak efficiency. Temperatures above normal, even for short periods of time can cause internal engine parts to fail. Occasionally the fan will be audible after the engine has been shut off, this is normal and is performed to lower engine temperature to acceptable levels. Usually, electric fans will activate shortly after the air conditioner is turned on, this is done to dissipate the extra heat produced in the condenser while the air conditioner is in operation. Engine cooling fans are temperature controlled to only run when neede...

Coolant Temperature Sensor CTS Working Procedure Of Vehicle CTS. Article describes how a engine coolant temperature sensor works. An coolant temperature sensor is located at the water outlet of the an internal combustion engine. Comprised of a housing filled with a composite which varies the resistance through the internal circuit (2 wire.) The car's computer or PCM uses this reading to make adjustments to the engine and transmission operating systems. Also described as an ECTS (electronic coolant temperature sensor) these sensors are easily tested using a voltmeter that can read the ohms of resistance at a particular engine temperature. This sensor also provides data to adjust the in-dash gauge to inform the driver on engine operating temperatures. In older models this operation was perform by a coolant sensor which was a one wire sensor that performed the gauge readings solely. Coolant Temperature Sensor ECTS When the engine is started, the computer uses sensor da...

Thermostat Working Of Automotive Thermostat Simple Testing Prepare a pan of boiling water deep enough to cover the thermostat completely, gently drop the thermostat in, observe the plunger, it should start to move and open completely within 45 seconds, if the plunger doesn't move the thermostat has failed, if the thermostat plunger is open whilst being removed it has also failed. Helpful Information A thermostat maintains engine temperature as it opens and closes throughout the engine operation. Once removed, inspect the condition of the main body of the thermostat, look for cracks or broken pieces and the valve to be closed. Avoid running an engine without a thermostat, this unit also acts as a system flow regulator, if coolant is allowed to travel too fast in the system, the heat exchange rate is reduced in the radiator and the engine will overheat. A thermostat consists of a main housing, a plunger valve with return spring. Temperature sensitive wax fills a plunger...

Cooling System Working Of Vehicles Cooling System Helpful Information The engine's combustion chamber can reach temperatures of up over four thousand degrees Fahrenheit. About thirty percent of the fuel is converted into actual power, and the remaining seventy percent is developed into heat. A cooling system protects an engine from damage by transferring heat to the atmosphere by using the radiator. A correct operating temperature is critical for the proper function of the engine which is controlled by the thermostat. Car manufacturers have found that a 195° thermostat is optimum for efficiency. Below this threshold the catalytic converter will not work properly which will produce increased emissions. In the beginning, water was used for cooling systems, as it's the most efficient fluid to absorb and dissipate heat. The disadvantage of using water is that it freezes at a higher temperature and, boils at a lower temperature than coolant besides causing rust. Eventual...