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How to Troubleshoot the Cooling System in a Honda Prelude

Contributor
By eHow Contributing Writer
(0 Ratings)

An engine cooling system is one of your car's most important features, since it keeps the car from overheating. If your prelude's engine cooling system is experiencing problems, then there are a few things you can do to troubleshoot the system.

Difficulty: Moderately Easy
Instructions

Things You'll Need:

  • Wrench
  • Liquid gasket
  • Genuine Honda antifreeze coolant
  • Radiator pressure tester

    Add Coolant

  1. Step 1

    Turn off your engine and wait for it to cool, then remove the engine splash lid and your radiator cap. Drain the coolant after loosening the drain plug.

  2. Step 2

    Drain the block and heater by removing the drain bolt, which is near the rear side of the cylinder block. Put some liquid gasket on the threads and then put the bolt back on and tighten it.

  3. Step 3

    Fill the reservoir tank with water, halfway to the "max" mark. Add antifreeze to the tank, until it hits the "max" mark.

  4. Step 4

    Use a separate container to create a 50/50 mixture of water and antifreeze. Add this mixture to the radiator until the mixture reaches the bottom of the tiller neck.

  5. Examine the Thermostat and Water Pump

  6. Step 1

    Inspect your cooling system's thermostat by suspending it in a container of water, so it doesn't touch the bottom.

  7. Step 2

    Place a thermometer into the container of water.

  8. Step 3

    Check the temperature when the thermostat first opens (temperature should read 169 to 176 degrees F) and when it's fully opened (temperature should read 194 degrees F).

  9. Step 4

    Remove the timing balancer belt and timing belt to look at your water pump.

  10. Step 5

    Examine the water pump's pulley to be sure that it turns freely. Look for leaks around the seals.

  11. Check the Radiator Pressure

  12. Step 1

    Remove the radiator cap if you haven't already done so.

  13. Step 2

    Wet the cap's seal with coolant. Place the cap on a radiator pressure tester. Apply a pressure of 95 to 125 kpa (0.9b to 1.25 kg/cm, 14 to 18 psi). Replace the cap if the pressure drops.

  14. Step 3

    Fill the radiator with coolant to the top of the filter neck. Attach a pressure tester to the radiator and apply a pressure of pressure of 95 to 125 kPa (0.95 to 1.25 kg/cmr, 14 to 18 psi.)

  15. Step 4

    Look for problems, such as leaks and a drop in pressure.

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