Sunday, May 20, 2012

Dealing With an Overheated Radiator

Car with Overheated Radiator
Radiators are essential parts of any engine cooling system. They are designed to dissipate the heat, which the coolant has absorbed from the engine. However, like all auto parts, radiators are prone to damage and corrosion. As it is mostly made of metal and is in constant contact with liquids, radiators can collapse over time due to corrosive forces. Defective radiators can spell doom for any engine. Irreparable damage can result if a malfunctioning radiator is not repaired or replaced immediately. Overheating is one of the most common collapses that autos encounter during the summertime season. It happens when the temperature of the coolant passes the normal operating temperature range of the engine. Overheating has many causes. Idling under hot weather for extended periods can wreak havoc on the cars cooling system, because the water pump does not turn fast enough. Thus the coolant is not circulated, as it should be. Sometimes a leak may cause the coolant level to drop thus causing the radiator to overheat. Here are a few pointers for dealing with an overheated radiator:

1. Turn off the A/C. If the car is not seriously overheating, this will reduce the engine's temperature. The AC evaporator is placed in front of the radiator, and it adds heat to the air going to your engine. The hotter the incoming air is, the less efficient the radiator will be.

2. Turn on your heater (set on highest temperature setting, with blower on highest setting). This will be uncomfortable for you, but it will cool the engine by transferring the heat to the air. Roll down the windows, and remember how 'hot' you will get if your engine needs replacement!

3. If you are stuck in traffic jam, pull over and stop. Unless you are moving, very little cool air reaches the radiator. Open the hood and let the engine cool down. This takes time, so be patient. Use the time to go get a jug of water or antifreeze.

4. Check the overflow tank coolant level. If it is empty, the radiator is probably low on coolant.

5. Check the pressure of the system by wrapping a cloth around the upper radiator hose and squeezing it. If it is still under pressure (hot) it will not squeeze easily. Wait until it does.

6. Place a large cloth over the radiator cap, and carefully release the pressure. Serious burns can result from the hot coolant. If in doubt, wait until the engine cools completely.

7. If the coolant is low, start the engine, and slowly add the water or coolant necessary to fill it up. The engine must be running. Adding coolant to a warm engine can crack the block. By running the engine, the coolant keeps moving and reduces the chances of this type of damage occurring.