Toyota Celica 1986-1993 Repair Guide

Hoses

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Inspect the condition of the radiator and heater hoses periodically. Early spring and at the beginning of the fall or winter, when you are performing other maintenance, are good times. Make sure the engine and cooling system are cold before examination. Visually inspect for cracking, rotting or collapsed hoses, replace as necessary. Run your hand along the length of the hose. If the hose is being rubbed through at any point or if a weak or swollen spot is noted when squeezing the hose wall, replace the hose.

REMOVAL & INSTALLATION




WARNING
When draining the coolant, keep in mind that dogs and cats are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles left on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or a few years old.

  1. Place a large drain pan under the radiator draincock. The draincock is located on the lower right side of the radiator.
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  3. Open the draincock and drain the radiator. Only a few turns is required to establish a good flow.
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  5. Once all the coolant is removed from the radiator, close the draincock and move the drain pan out of the way.
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WARNING
To help prevent unnecessary spillage, before draining the radiator, obtain a length of rubber hose or tubing and connect it to the end of the draincock. The length should be sufficient enough to direct the coolant from the drain cock to the drain pan. Save this item, because it will be useful whenever the engine coolant is drained.



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Fig. Fig. 1 Removing the heater hoses3S-GTE engine shown



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Fig. Fig. 2 Removing the upper radiator hose



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Fig. Fig. 3 Use the radiator draincock to drain the cooling system enough to replace a hose. It is not usually necessary to drain the engine block

  1. Release the tension of the two upper radiator hose clamps and slide the clamps away from the hose connections. With a moderate twisting and pulling motion, remove the upper radiator hose from its attaching points.
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  3. Loosen the two lower radiator hose clamps and push the clamps away from the hose connections. Remove the lower hose in the same manner as the upper hose.
  4.  


WARNING
It is not necessary to discard the old hoses as long as they are not badly cracked or swollen. Shake them out to remove the coolant, seal them in a plastic bag and store the hoses in the trunk or luggage compartment. Old hoses provide a good short term repair if, by chance, a new hose fails. Also, if new clamps are being installed, throw the old clamps in with the hoses.

  1. Before installing the new hoses, ensure that the radiator and engine hose connections are clean. This is important for proper sealing.
  2.  
  3. Install the lower radiator hose with new clamps. Make sure the clamps are even and adequately tight.
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  5. Install the upper radiator hose with new clamps. Make sure the clamps are even and adequately tight.
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  7. Fill the reserve tank to a level between the Low and Full lines on the tank with a suitable ethylene glycol based coolant mixed with the proper amount of water (follow instructions on coolant container). Make sure the radiator cap is tight.
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  9. Start the engine and allow to idle for several minutes, making sure the engine does not overheat. Check the hose connections for leaks. If available, use a pressure tester to check the system for leaks, following the manufacturer's instructions.
  10.  

 
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