Coolant Expansion Tank

Symptoms of Wear or Failure

  • Engine coolant leak
  • Engine overheating
  • Coolant may boil over
  • Illumination of the low coolant warning light

Related Repair Advice

  • The coolant cap should not be removed from a pressurized expansion tank when the engine is warm
  • The coolant level in the expansion tank should be checked every other time the gas tank is filled
  • We highly recommend replacing the coolant cap when replacing the expansion tank
  • If the coolant level in the expansion tank consistently drops after topping off, there is probably a leak
  • Failure of the low coolant sensor may require replacement of the expansion tank