Question about 2005 Toyota Corolla

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Missing radiator drain plug

I have a 2005 toyota corolla that is leaking coolant. under the engine block, there is a hole where i am assuming a drain plug should be. is this a correct assumption and where is best place to get a replacement??

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  • Anonymous May 02, 2009

    I am trying to locate the radiator drain plug on a 2003 toyota corolla, Can you tell me where it is



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Drain plug should be in radiator


Posted on Apr 19, 2009


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2 5 engine diagram

check for the leak at the hose housing on the block as they are prone to corrosion under the hose and developing holes. Do the checking while the radiator is under a pressure test then the leak can be easily seen with out the need to have the engine running or be hot.. Check the drain hole under the water pump as the pump seal may be leaking.

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How to change thermostat

Take off the radiator cap and open the radiator drain plug. Let it all drain out. Also open the block drain plug on the engine-it is down low on the engine block, just beneath the freeze plugs. Or if you don't open the block drain, about a quart of old coolant will remain in the engine. Not everyone drains it completely.
Now loosen the upper radiator hose clamp on the thermostat housing, and pull the hose off the housing. Two bolts hold the thermostat housing onto the block. Note how tight they are-when retightening these bolts, do not overtighten. Pull off the housing and remove and discard the old thermostat. Place new thermostat in proper position, and clean or scrape the old gasket material from the housing and the block mating surface-get it shiny clean again. Remove alll traces of old gasket or adhesive completely to avoid causing a leak. Refit new gasket and housing back over the thermostat, and tighten the two retaining bolts down evenly. The torque on them would be about 15 ft. lbs.-run them down finger tight, then a couple of turns with the wrench, and that's about it. If it leaks there, another turn on the bolts should stop it. Now fit the hose back on the housing and tighten the clamp. Close the radiator drain (and engine drain, if you opened it), and refill the radiator with a 50-50 mix of antifreeze and water, also the coolant recovery tank. Now turn heater control to high heat, start the car with the radiator cap off (to expel air) and run till normal operating temperature is reached. Now the thermostat should be open and the coolant level in the radiator may drop. Turn off the car and add coolant to the radiator as needed to top it up. Check for leaks at the thermostat housing, replace the rad. cap. I think you are done.

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Toyota Corolla 2003 CE. Car started overheating, Pulled over and steam was coming from engine. Found out radiator seemed to be leaking. poured antifreeze into radiator and heard liquid splashing on ground...

You may need to "burp" the system and get the air out. When car has completely cooled, take radiator a off, start car, let it warm up (but not overheat) and see if level drops. Add coolant/water mix to top it off. Never run straight antifreeze. At most a 50/50 mix of distilled water and antifreeze.
Air can get trapped in areas of the system when its been drained. Just monitor that temp and don't risk damaging the engine by overheating.

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2 Answers

How to drain radiator

hello. on the drivers side of radiator is a drain. here is a picture and the instructions for draining the coolant out.

  • Install a tube on the radiator drain. Place the end of the tube in the drain pan.
  • After the engine cools down, remove the radiator cap.
  • Completely open the radiator drain ****.
  • Allow the coolant to drain from the system until the flow stops.
  • Place a drain pan under the block drain hole plug.
  • Remove the drain hole plug from the engine block.
  • Allow the coolant to drain from the block until the flow stops. There may be more drainage from the radiator at this time.
  • Install the block drain hole plug.
  • Close the radiator drain ****.

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    Should be a drain **** at the bottom of the radiator that unscrews out. It looks like a wing nut has been welded to a bolt on the end of it. Another way to do this is just pull off the bottom hose.

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    Coolant leak from radiator of toyota corrolla

    Instead of having it replaced, you may be able to find a shop that will braze that area for you, which is an often-performed repair procedure on radiators.

    At 34,000 miles, the coolant doesn't have to be replaced, but it won't hurt.

    If it's dripping slowly when parked, it's dripping much faster when it's running. The coolant system is under pressure when the engine is running and up to operating temp, and that is probably causing coolant to spray out of that hole. You can check this by leaving the engine running and looking in the approximate location of the leak you found.

    Continue to check and replace coolant/water as necessary until you get the problem properly assessed and repaired.

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    How difficult to replace 1995 Toyota Corolla radiator/thermostat

    You can replace the radiator yourself, but why do you need to? The thermostat is on the engine. Follow the large hose that goes to the engine block....not the water pump. The thermostat is under that or sits on the top of the engine....looking for a pic for you!

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    well if you have water or coolant leaking on to the rug in your car, first you must remember that every car has 2 radiators. One for the Engine which is in the front of your car under the hood and one for your heater, which is usually hidden deep behind the dash inside of your car. So if you are leaking fluids on to the rug in the car; Im 90% sure its going to be something dealing with the heater radiator. What you have to do is find out where your heater radiator is on your car and check all the hoses.

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