300M, Concorde, LHS, New Yorker Discuss the Chrysler LH platform cars within.

02 300M 3.5L HO-OverHeating

  #1  
Old 06-02-2019, 08:20 AM
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Angry 02 300M 3.5L HO-OverHeating

I have a 2002 300M 3.5L HO the other day it over heated to the red...I didn't notice till it set a code and dinged...
Luckily I was less than a half block from home...when I opened the hood ...I discovered a crack in the tank reservoir
spraying coolant...I got a replacement online changed it out and added some universal coolant less than half a gallon!
I did open the bleed valve while adding coolant it was a steady flow no bubbles, but now the car overheats under driving conditions very fast 10-15 minutes it's fine idling but driving it goes up past half quickly but if I crank the heat it comes back down to half, is there another issue or just air in the system
 
  #2  
Old 06-02-2019, 01:47 PM
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prob warped the heads
 
  #3  
Old 06-03-2019, 05:41 AM
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Heads and head gaskets are vert robust on the 3.5. Anyone that advises heads or gaskets first needs to learn how to properly troubleshoot and diagnose rather than throw parts>
 
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