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Overheating I have replaced the temperature switch, head gasket, water pump, thermostat, coolant

Tiny
COZZYJR22CJ
  • MEMBER
  • 2003 DODGE NEON
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 111,642 MILES
I have replaced the temperature switch, head gasket, water pump, thermostat, coolant. I bypassed the heater core. The fans work perfectly. I have had a mechanic do a cooling system flush and he told me the system was clean. There are no codes or any problems that come up on a diagnostic machine. There is no leaking of coolant in oil or visible anywhere else. When car is shut down after running hot the reservoir bubbles/gurgles rapidly and furiously. My question is, what else could be causing the overheating problem even after doing everything I did?
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Wednesday, August 3rd, 2011 AT 4:52 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be airlock. Try bleeding it and see what happens, -if it continues chemical test the cooing system for the presence of exhaust gasses (bad head gasket). You can get the chemical test at most auto parts stores.
See the guide below for more information on overheating:

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Let us know what you find.
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Friday, May 21st, 2021 AT 3:46 PM

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