LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Engine Cooling System & Automatic Transmission Cooling System) >> Cooling >> Diagnosis And Testing >> Cooling System Aeration

Cooling System Aeration

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

If coolant level drops below a certain point, aeration will occur drawing air into the water pump resulting in the following:

  1. High reading shown on the temperature gauge.
  2. Loss of coolant flow through the heater core.
  3. Corrosion in the cooling system.
  4. Transmission oil will become hotter (automatic transmission equipped vehicles).
  5. Water pump seal may run dry, increasing the risk of premature seal failure.
  6. Combustion gas leaks into the coolant can also cause the above problems.