How do I troubleshoot an overheating issue in my Vauxhall Vivaro?

My Vauxhall Vivaro keeps overheating during long drives. What could be causing this and how can I fix it?

First, check your coolant levels and see if there are any leaks. If everything looks normal, it could be a faulty thermostat or radiator. I suggest taking it to a mechanic for a thorough inspection.

Make sure your radiator fins are clean and not clogged with debris. Also, check your water pump and make sure it's functioning properly. If all else fails, consider getting a coolant flush to clear out any build-up.

Have you recently started using your van for long distance hauling? It could be putting extra strain on your engine and causing it to overheat. Consider giving your van a break during trips and let it cool down periodically.