Guide: Dodge Neon Thermostat Replacement (1999-2005)

By | August 11, 2015

Changing out a second generation Dodge Neon thermostat is a straight forward task that definitely falls in the DIY category.
A bad thermostat will cause a Dodge Neon or any car to overheat and needs replaced when bad.
As always call a mechanic if you don’t feel comfortable working on your own car.
Only a few tools are needed along with the thermostat which can be bought at any auto store or even on Amazon.
Items Needed
Thermostat for a Dodge Neon (1999-2005)
Thermostat for (1999-2005) Dodge Neon on Amazon
Stant 14209 Thermostat – 195 Degrees Fahrenheit

10 mm socket with a extension and ratchet.
Large pair of pliers and screwdriver.
Pan to catch leaking fluid.
Thermostat gasket or silicon.
Be sure the car is cooled down and not hot. If the car is hot the coolant will be under pressure and can burst out scalding anyone nearby.
The thermostat is located on the left when looking into the engine compartment from the front. Place a pan under the car to catch any fluid that leaks out.
Dodge Neon Thermostat Replacement
Guide Dodge Neon Thermostat Replacement
Pan to catch leaking coolant Dodge Neon
Remove the coolant cap and remove the hose clamp. Some hose clamps have a screw on clamp while others have a pinch type clamp that is removed with a pair of pliers.
Removing thermostat hose clamp dodge neon
A second small hose also needs to be removed.
Small hose thermostat replacment Dodge Neon
Two 10 mm bolts hold the assembly into place and need to be removed.
10 mm bolt removal Dodge Neon thermostat
Dodge Neon thermostat removal 2
After the 10 mm bolts are removed the housing will come off and the thermostat will be exposed.
Dodge Neon thermostat housing removal
Neon thermostat replacement
The next step is to remove the old thermostat from the housing and insert the new one. The housing should be cleaned of any debris.
Neon thermostat replacement aa
The new thermostat will have notches that are aligned when inserting it.
Dodge Neon thermostat install 2
Both the thermostat housing and the engine should be cleaned so it can seal properly and not leak.
Dodge Neon thermostat install and removal
Insert the new thermostat and gasket put it back together.
Inserting new thermostat Neon
Reinstall the 10 mm bolts and connect the hoses.
Dodge Neon thermostat install and removal 2
Fluid will need to be added which will change after the Neon has warmed up and water flows past the thermostat.



One thought on “Guide: Dodge Neon Thermostat Replacement (1999-2005)

  1. Beth

    What is the best way to clean the thermostat housing and the engine so it can seal properly. Is there a cleaner that needs to be used or do you just wipe it off till clean?


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