1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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17,316 Posts
Welcome to Allpar. Durango is a Mopar, so this topic may be moved to the truck section.
If the truck is fine up to 40 mph and then the shudder starts, it sounds like tires or drivetrain. Either an imbalance or failing driveshaft joint condition?
Further diagnosis is needed. Is the shudder felt more in the floor and seat than in the steering wheel? Does it vary with road speed or acceleration and coast? Does it feel up/down or side-to-side at all?
Shudder 'frequency' is important. A shake may be slower than a shudder. A rapid shudder may be driveshaft related as the driveshaft turns at about 3 times the tire speed. If the shake is about once every tire revolution (still pretty fast at 40 mph), it may be tire/rim imbalance or a damaged tire belt.
If the truck is fine up to 40 mph and then the shudder starts, it sounds like tires or drivetrain. Either an imbalance or failing driveshaft joint condition?
Further diagnosis is needed. Is the shudder felt more in the floor and seat than in the steering wheel? Does it vary with road speed or acceleration and coast? Does it feel up/down or side-to-side at all?
Shudder 'frequency' is important. A shake may be slower than a shudder. A rapid shudder may be driveshaft related as the driveshaft turns at about 3 times the tire speed. If the shake is about once every tire revolution (still pretty fast at 40 mph), it may be tire/rim imbalance or a damaged tire belt.