Mustang Engine Overheating

The symptoms you describe certainly point towards a cooling system malfunction. Is the coolant level normal? Any leaks? It sounds like your thermostat might be stuck closed, like a gatekeeper dozing on the job. Is the radiator getting hot when the engine is overheating?

Coolant level is normal and no apparent leaks. The radiator does heat up, but only after a considerable amount of time. Does this mean a faulty map thermostat?

Indeed, based on your observations, a defective map thermostat is the most probable culprit. I concur. The symptoms you are describing are typical. While it could theoretically be something else – like a partially clogged coolant passage, like a blocked artery – the thermostat is the most common failure point. I strongly recommend you bring your vehicle to a trusted workshop to professionally diagnose and repair the issue.

Understood. I appreciate the clarification and expertise. I will schedule a visit to the workshop as suggested. Thanks again.