1. Low coolant level: Check the coolant level in the reservoir. If it's low, add more coolant and check for any leaks in the cooling system.
2. Faulty thermostat: A faulty thermostat can prevent the engine from cooling properly. Check the thermostat and replace it if necessary.
3. Water pump failure: A faulty water pump can also prevent the engine from cooling properly. Check the water pump and replace it if necessary.
4. Radiator problems: A clogged or damaged radiator can restrict the flow of coolant, causing the engine to overheat. Check the radiator and clean or replace it if necessary.
5. Head gasket failure: A blown head gasket can allow coolant to leak into the engine, causing the engine to overheat. Check the head gasket and replace it if necessary.
It's important to address the issue as soon as possible to prevent further damage to the engine. If you're not comfortable diagnosing and fixing the problem yourself, take your Jeep to a qualified mechanic for diagnosis and repair.