Question about 2002 Toyota Tundra

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How do I flush the coolant on the 2002 tundra V6?

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  • Master
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PROCEDURE TO FLUSH

  • Park the Toyota Tundra on a level surface and set the parking brake. Then, with the engine off, touch the radiator to gauge its temperature. If the radiator is still warm, allow it to cool off before you start next step.
  • Twist the radiator cap one full turn, pause for a few seconds and then fully remove the cap. You want to pause to relieve any internal pressure inside the radiator. Opening a pressurized or hot radiator can cause it to spew hot coolant and burn anyone it comes into contact with.
  • Position a bucket or tray with a two-gallon capacity underneath the radiator, below the drain plug. To access the drain plug, you may have to remove the plastic engine undercover, which should be on the driver's side of the Toyota Tundra's radiator. Use a socket wrench to open the plug.
  • Open the drain plug and allow the existing coolant to drain completely into the bucket. Once complete, pour the old coolant into a sealable container for proper disposal.
  • Put the drain bucket back under the radiator and close the drain plug. Then, fill the radiator with distilled water. Next, open the drain plug to let the water flow into the bucket. Replicate this procedure until the water runs debris free out the radiator.
  • Replace the radiator drain plug and pour fresh coolant into the radiator until it's within an inch of overflowing. With the Toyota Tundra, you need to use the same coolant that came with the truck. Most likely, it is Toyota Long Life red coolant, but consult the owner's manual to be sure.
  • Start the engine of the Tundra and turn the heating fan to high. Allow it to run until the cooling fan turns on two separate times.
  • Switch the Toyato Tundra off and check the coolant level. If it is lower than before, add more coolant. If not, put the radiator cap back on and close the hood.
  1. TIPS
  • You will need 2 gallons of coolant for the four-valve Toyota Tundra and 3 gallons of coolant for the six-valve model.
  • Using tap water from a hose is an alternative to flushing with distilled water, but tap water can leave sediments behind that can damage your coolant system
WARNING
  • Because coolant is extremely toxic to people and pets, it's imperative that you dispose of the old coolant properly.

Posted on Nov 14, 2009

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  • Toyota Master
  • 2,359 Answers

The textbook method is to remove the drain plug on the bottom of the radiator.

Most drain plug is make of inexpensive nylon/plastic and it may fall apart while you turn it.

The professional method is to loosen the lower radiator clamp and drop to lower radiator hose.

Drain the coolant onto a large drain pan and recycle the coolant

===

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Posted on Dec 06, 2009

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I need to replace, a ects in my 2003 KIA sedona where is that piece located


Sarah, The Engine Coolant Temperature Sensor on your Kia is located below rad hose driver side by exhaust manifold. May be a good time to flush coolant system when changing sensor.
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Tip

Flush the coolant on the 2002 tundra


PROCEDURE TO FLUSH
  • Park the Toyota Tundra on a level surface and set the parking brake. Then, with the engine off, touch the radiator to gauge its temperature. If the radiator is still warm, allow it to cool off before you start next step.
  • Twist the radiator cap one full turn, pause for a few seconds and then fully remove the cap. You want to pause to relieve any internal pressure inside the radiator. Opening a pressurized or hot radiator can cause it to spew hot coolant and burn anyone it comes into contact with.
  • Position a bucket or tray with a two-gallon capacity underneath the radiator, below the drain plug. To access the drain plug, you may have to remove the plastic engine undercover, which should be on the driver's side of the Toyota Tundra's radiator. Use a socket wrench to open the plug.
  • Open the drain plug and allow the existing coolant to drain completely into the bucket. Once complete, pour the old coolant into a sealable container for proper disposal.
  • Put the drain bucket back under the radiator and close the drain plug. Then, fill the radiator with distilled water. Next, open the drain plug to let the water flow into the bucket. Replicate this procedure until the water runs debris free out the radiator.
  • Replace the radiator drain plug and pour fresh coolant into the radiator until it's within an inch of overflowing. With the Toyota Tundra, you need to use the same coolant that came with the truck. Most likely, it is Toyota Long Life red coolant, but consult the owner's manual to be sure.
  • Start the engine of the Tundra and turn the heating fan to high. Allow it to run until the cooling fan turns on two separate times.
  • Switch the Toyato Tundra off and check the coolant level. If it is lower than before, add more coolant. If not, put the radiator cap back on and close the hood.
TIPS
  • You will need 2 gallons of coolant for the four-valve Toyota Tundra and 3 gallons of coolant for the six-valve model.
  • Using tap water from a hose is an alternative to flushing with distilled water, but tap water can leave sediments behind that can damage your coolant system
WARNING
  • Because coolant is extremely toxic to people and pets, it's imperative that you dispose of the old coolant properly.

on Mar 17, 2010 | Toyota Tundra Cars & Trucks

2 Answers

Fix bad fuel economy on toyota v6 engine


I have worked for toyota (dealership)for 16yrs. the v6 in your tundra 4.0L does not get good fuel economy sorry.a tech. could hook up a scan tool and check fuel trim .to see if everything is working properly.

Mar 07, 2015 | 2002 Toyota Tundra

1 Answer

2002 tundra humming noise from front end while parked


That is your electric fan. Normal, especially in the summertime. Just make sure that you have enough coolant in your radiator, and that your engine temperature isn't abnormally high.

Jul 20, 2014 | 2002 Toyota Tundra

1 Answer

2002 / 3.4litter / v6 is overheating no leaks


replace you thermostat located at end of top radiator hose on engine (most of the times) and have your radiator flushed add new coolant

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1 Answer

Where is engine coolant drain plug located on 3.4


Should be at the bottom of the radiator. If you are unable to find it, just disconnect the bottom radiator hose, from the radiator, and reconnect it once finished draining.

Jul 10, 2010 | 2002 Toyota Tundra

1 Answer

How do you flush out the coolant system in a 2003 Implala 3400 V6


the thermostat housing is located where the radiator hose connects to the engine. you'll need a flush kit to flush it out, it comes with instructions

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1 Answer

I have a 2002 f150 with a 4.6. my heat quit working recently so i replaced the thermostat, blend door actuator and flushed the coolant. All wasgood until i flushed the coolant....shortly after i flushed it...


Did you flush the coolant with a kit? Did you back flow the coolant? And one more question. Did you flush it with water hose or something with more pressure?

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3 Answers

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ck the coolant level, if low, top off and ck for leaks. then see if the heat comes back. if coolant level is good and engine temp guage is in the middle, flush heater core. if engine temp is too low, replace thermostat.

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