I have a 2015 f 250 superduty, original owner, that i am now expreience what is refered to as a "death wobble.' this has happened to me four times over the past three months. each time i was driving at about 70 mph, either on a concrete freeway, or on an ashpalt highway, hit a small bump in the road, then the truck bounces around. you do not have control of the vehicle, steering input causes it to increase the wobbling and bouncing. each time the wobble did not stop until i was below 40 mph and braking. one time i had an empty 16 foot flat bed trailer, which almost caused the trailer to flip. the three other times no trailer. each time i felt heplless in controling the vehicle and scarrng the *^%^*& out of me.in researching the internet this issue has been a problem for some time and there has been no recall. why has there been no recal on this issue?
Engine light is illuminated while driving and stopped on dash and code p208 comes up for the reductant heater failed, this causes the exhaust system to not fully clean out and could place the truck into a limp mode causing decreased power and potentially stop the vehicle all together
Exhaust flange bolts sheared during normal operation. i.e. not during off road activity, no excessive bumps such as pot holes or rough track crossings. this has happened two separate times at different flanges.
While driving on an expressway part of the exhaust system fell off and bounced around in traffic. six bolts had rusted away and ford exhaust part # 5a212 dropped off. i felt it hit the underneath of the vehicle and saw it bouncing on the road as i drove on. i originally thought it was road debris i had driven over but i got off the expressway at the next exit to check the truck. at that time i couldn't determine what it was so again i attributed the part to road debris. the vehicle drove, handled and sounded the same. it wasn't until later when washing the truck that i noticed the tail pipe was loose. upon further inspection i determined there was part of the exhaust system was missing. the vehicle is now 4 years old but spends most of the winter in the south, not exposed much to salt treated roads. i don't believe 6 bolts should have rusted away to cause the failure. i have notified ford of the situation.