2018 expedition max coolant temp fluctuating ....

[Jozef Zoldos]

2018 max with 22k miles—-Not towing and whenever I accelerate going on highway (turbo engaged) temperature shows 232 (highest it went was 238) and then whenever I let off gas goes back to middle and no number shows. Is this normal for everyone else? No leaks and coolant level is at max

Look at a thread that I posted last week. I just went thru the same issue. In my situation, it was a sticky thermostat. That is probably the most common cause of this issue.

2020 Expy Overheating at Highway speeds.

So. I have a 2020 Expedition Platinum Max with 60K miles. No trailer tow package. Over the past 2 weeks, I noted some mild overheating when driving highway speeds. The temperature would appear above the Cold/Hot water temp guage as shown below. Never noticed this before. Hooked up a...

www.expeditionforum.com

JZ