OEM 2002 Dodge Dakota Thermostat

2002 Dodge Dakota Thermostat Parts and Q&A

• Q: How to Maintain the Thermostat on 3.9L and 5.9L Engines on 2002 Dodge Dakota?

  A: Do not attempt to replace the 3.9l or 5.9l engine coolant thermostat until the system has cooled, so you don't get burned by the coolant. Be sure to use a thermostat that is correct for the make and engine of your vehicle. Remove the negative battery cable and make sure the cooling system is drained until the level of coolant is under the thermostat. If the vehicle has air conditioning, separate the support bracket near the rear of the generator, partially remove the generator while leaving the wiring connected and unplug the 4Wd indicator lamp harness if it comes with one. Lift the generator drive belt out of the way, release its hold by removing the two mounting bolts and remove the generator to get access to the thermostat gasket. Choose the right tool to tighten constant tension hose clamps, for example, number 6094 or the Snap-On tool called Hpc-20 and always wear safety glasses when you're working. Loosen the radiator clamp and the upper radiator hose at the thermostat and move the wiring harness out of your way behind the thermostat housing. Take out the housing bolts, housing, discard the old gasket and remove the thermostat from its housing. Set both parts back where each is removed, but turn the intake manifold sideways. Place the thermostat housing so the word Front points toward the front of the vehicle, install the housing to intake manifold bolts and tighten them to 23 Nm (200 inch lbs.). Guide the accessory drive belt in the proper position and then attach the upper radiator hose to the housing of the thermostat, both to stop the engine from getting hot. With an air-conditioned vehicle, the generator goes back in first and the bolts are tightened to 41 Nm (30 ft. lbs.). Install the support bracket afterward and tighten its bolts using 54 Nm (40 ft. lbs.). Once done, place the accessory drive belt, fill the cooling system, reconnect the negative battery terminal, fire up the engine and search for any leaks.