Problem with overheating of the Opel Vivaro 2018: Possible defect in the cooling air flap system

Hello, something similar happened to me with my 2016 Opel Movano. I'm not a car professional, but I have average experience and, like you, experimented a bit. The problem was finally solved by my garage. The wiring harness for the radiator shutter was defective/rubbed up behind the bumper. I then paid 270.0 euros for the repair. So, see if that's your problem too. Which model do you have and have you noticed any other signs or error messages? This could help you to narrow down the problem. All the best!

(Translated from German)

Hey, thanks for the answer. My model is the Opel Vivaro with a gasoline engine. There are 123406 km on the odometer and the last inspection was recently. Apart from the overheating, I haven't noticed anything, no error messages or anything like that. I'll take your advice on board and have the wiring harness checked. I hope that's it! Thank you, really cool of you!

(Translated from German)

No problem, I'm happy to help! With so many kilometers on the speedometer, it's not that unusual. Another thing I can think of is that you should also check the coolant level if you haven't already done so. It may sound simple, but it can easily be overlooked and is often the culprit in overheating problems. So, if the wiring harness is OK, that would be something else to check! Good luck, good luck, good luck!

(Translated from German)

Thank you very much, I will do that. It's good to know that it's not just me and that there is a solution. I really appreciate your willingness to help. I will follow your advice and check the coolant level and of course have the wiring harness checked at the garage. I hope that solves the problem. Thanks again for your help!

(Translated from German)

My Opel vivaro 2018 always overheats. The tank is at a normal level until it is hot, then it is suddenly full and starts to overflow. There is a lot of pressure on the tank and the coolant is very hot. What could be the cause?

(Translated from German)

It sounds like there might be an issue with the thermostat or a blockage in the cooling system. A faulty thermostat can prevent coolant from circulating properly, causing overheating and pressure build-up. I recommend checking the thermostat first to see if it's stuck closed. If you're unsure how to do this, it might be best to have a mechanic inspect it. Let me know how it goes or if you have any other questions!