Overheating

Tiny
JASON OLDFIELD
  • MEMBER
  • 2004 CHRYSLER TOWN AND COUNTRY
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I am at wits end again with this van.

The van overheats seemingly at random.

I have replaced the:
Radiator
Thermostat
Coolant Temperature Sensor
Water Pump
Heat Coil Bypass hose

and a Partridge in a Pear Tree


The vehicle will stay at normal temperature for a long time. Then eventually it will start overheating. The reservoir remains full and there is no evidence for a blown head gasket.

Please help! The Demons are eating my van!
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Sunday, November 10th, 2019 AT 4:22 PM

1 Reply

Tiny
KASEKENNY1
  • EXPERT
Unfortunately, this may be a head gasket. I have seen a number of times that the head gasket allows combustion chamber gases into the coolant when it gets hot.

The way to test this is when it starts to overheat you need to test for combustion gases.

I hate to say it but normally these hard to find and duplicate overheating normally always comes back to the head gasket.

https://www.2carpros.com/articles/head-gasket-blown-test

Let me know what you find and we can go from there.
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Sunday, November 10th, 2019 AT 6:44 PM

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