Dodge Omni/Horizon/Rampage 1978-1989 Repair Guide

Radiator

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REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Move the temperature selector to full on.
  4.  
  5. Open the radiator drain cock.
  6.  


CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles 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 several years old.

  1. When the coolant reserve tank is empty, remove the hose leading to the radiator.
  2.  



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Fig. Fig. 1 Disconnect the coolant reserve tank hose ...

  1. Loosen the radiator cap.
  2.  
  3. Remove the radiator hoses.
  4.  



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Fig. Fig. 2 ... and the radiator hoses

  1. Disconnect the fan.
  2.  



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Fig. Fig. 3 Disconnect the fan wiring

  1. Remove the fan shroud/motor attaching bolts. Be careful not to damage the fan blades, remove the shroud by pulling it upward and out of the attachment clips at the bottom.
  2.  



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Fig. Fig. 4 Unbolt the fan shroud bracket

  1. Disconnect the radiator fan switch wiring harness if equipped. This is located in the radiator.
  2.  



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Fig. Fig. 5 Disconnect the radiator fan switch wiring harness if equipped

  1. If equipped with automatic transaxle, disconnect and plug the fluid cooler lines.
  2.  



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Fig. Fig. 6 If equipped with automatic transaxle, disconnect and plug the fluid cooler lines

  1. Remove the upper and lower mounting brackets. Remove the top radiator attaching bolt.
  2.  



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Fig. Fig. 7 Once you have unscrewed the upper radiator bolts, set aside the brackets

  1. Remove the bottom radiator attaching bolts on 1981-85 models only.
  2.  
  3. Lift the radiator from the engine compartment.
  4.  



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Fig. Fig. 8 Lift the radiator from the engine compartment

To install:

  1. Installation is the reverse of removal. On 1987-89 models without rubber grommets at the top, preload the upper mounting brackets with 10 lbs. (5 kg.) of force downward. Tighten all mounting bolts to 105 inch lbs. (12 Nm). Make sure the hoses are fully installed onto the fittings and that clamps are properly tightened. Refill the cooling system with 50/50 water/antifreeze mix by filling the radiator to the top and the overflow tank to the fill line.
  2.  
  3. Connect the negative battery cable.
  4.  
  5. If there is no overflow tank, recheck the coolant level after the system has reached operating temperature and has then cooled.
  6.  

 
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