Thor
Member
When I do a descent on a steep mountain road my 2017 Expedition surges at about a 1 sec rate for most of the descent. This is a run from Alta Ski Resort to the Salt Lake Valley floor. I use third and second gear for most of the 7 mile descent and there is a distinct surging from the engine. I called the dealer about it last year and he said not to worry about it but I would like to know if anyone else experiences this and if it is thought to be a problem. I only have about 11,000 miles on the vehicle and it was doing it since I had less than 3000. It is a little intermittent and seems to be worse at some times than others but it definitely didn't happen with the Suburban I had before buying the Ford.