Check to see if the fan on the radiator is working at idle.
Here's information on how to change the fan if needed:
Engine Cooling Fan
Removal & Installation
- Remove the coolant bottle and set aside.
- Remove the power steering reservoir and set aside.
- Disconnect the cooling fan connector.
- Remove the cooling fan mounting screws and the cooling fan.
- Install the cooling fan and the mounting screws. Tighten to 50 in-lb (5.5 Nm).
- Connect the cooling fan connector.
- Install the power steering reservoir.
- Install the coolant bottle.
If the fan blade is bent, warped, cracked or damaged in any way, it must be replaced ONLY with a replacement fan blade. DO NOT attempt to repair a damaged fan blade.
For 3.7L Heavy Duty/Max Cool/Trailer Tow cooling package, the viscous fan cannot be removed separate from the shroud. Both fan and shroud must be removed together.
- Disconnect battery negative cable.
- Using special tool #6958 spanner wrench and #8346 adapters, remove the viscous fan from the water pump.
- Gently lay fan into shroud.
- Disconnect the electrical connector for the electric fan, then disconnect connector from shroud.
- Remove the two fan shroud mounting bolts connecting the fan shroud to the radiator.
- Remove the shroud and fan from the vehicle.
- Install fan shroud assembly into the vehicle. Tighten fan shroud to radiator bolts to 50 in-lb (5.5 Nm).
- Install shroud mounting bolts tighten bolts to 89 in-lb (10 Nm).
- Connect fan motor wire connector to harness connector, and attach connector to shroud.
- Connect negative battery cable.
- Start engine and check fan operation.