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.
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.
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.
A second small hose also needs to be removed.
Two 10 mm bolts hold the assembly into place and need to be removed.
After the 10 mm bolts are removed the housing will come off and the thermostat will be exposed.
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.
The new thermostat will have notches that are aligned when inserting it.
Both the thermostat housing and the engine should be cleaned so it can seal properly and not leak.
Insert the new thermostat and gasket put it back together.
Reinstall the 10 mm bolts and connect the hoses.
Fluid will need to be added which will change after the Neon has warmed up and water flows past the thermostat.