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A car can overheat while idling if there is not enough coolant in the radiator or there is a malfunctioning fan, radiator or fan belt. Additionally, some cars have a fan clutch that may cause overheating.


There are many reasons a car idles fast, but one common reason is a vacuum leak. Older muscle cars have only two or three vacuum hoses, making finding the leak easy. Newer vehicles have complex vacuum systems to reduce emissions, so leaks are more difficult to find. Popular Mechanics suggests sprayi


Car brakes overheat for various reasons, including as a result of riding the brake and applying excessive force to or overusing the brakes. When brakes overheat on a regular basis, hardened spots can develop on the brake drums or the rotors. These "hot spots" resist friction, causing brake failure.


According to About.com, there are several reasons vehicles idle low. Common reasons include vacuum leaks, carburetor problems, ignition issues, damaged power circuits and dirty fuel injectors. When a vehicle idles low, the vehicle stalls or shakes excessively when the brakes are activated, and this


Many issues prevent a car from idling, but in a vehicle with an onboard computer, the issue is often in the computer. A diagnostic scan tool provides error codes to determine the issue. On vehicles with carburetors, the issue is often with the accelerator pump.


Most moving parts of an engine expand when it overheats, and they can warp, bend or even break if the car is driven in this condition. A few examples include damaged cylinder walls, bent connecting rods, damaged bearings, broken crankshafts, warped cylinder heads and damaged head gaskets, all of whi


Possible causes of a car idling high while in park include the car having a bad accelerator, an overheating engine, the fuel pressure regulator operating at low pressure and the alternator acting up. One symptom of the car's idling problem is the driver having to apply brakes intensely when parked.


One of the most common causes for an overheating dryer is restricted airflow. A clogged lint filter, improper venting and dirty ductwork can all restrict airflow.


Overheating of a diesel engine can be caused by anything that decreases the efficiency of the cooling system. Low levels or loss of coolant, poor air flow through the radiator and a defective thermostat are just a few of the problems that could cause a diesel engine to overheat.


Depending on the type of car, idling consumes between 0.08 and 0.13 gallons of fuel every 10 minutes. Turning off a car's engine when parked for more than 10 seconds can improve fuel economy.