Heights Auto Imports

Porsche Overheats in Traffic but Not on the Highway: Cooling System Case File

Platform

  • 997 / 991 Carrera variants

 

Failure Mode

  • Radiator airflow restriction, fan control, thermostat behavior

 

Narrative Beats

  • Overheats only at idle
  • Fan extremely loud
  • Normal temps at speed

 

Diagnostics

  • Fan operation
  • Radiator condition
  • Cooling system flow testing

 

Outcome

  • Normalized temperature behavior
  • Prevented repeated overheating
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