broken blend door the accuator is still trying to do what it is commanded to do
A little kid in the trunk with a hammer
you may have a rod knocking and you need to take it to a shop asap
A loud knocking noise in the motor of a car at high speeds is most likely the engine. There could be another issue with the transmission if the knocking only happens at high speeds.
Running too lean.
worn, lose rocker arms
Having a bad rod bearing could cause a truck to make a loud knocking noise and shake when driving at high speeds. The engine having a coolant leak or an engine timing problem could also cause the knocking noise.
Yes Yes
rack and pinion
It's the spirit of the car knocking on the side saying "HELLO??? TAKE ME TO A MECHANIC!"
it's probably a rod knocking
Serious engine knock or valve train noise. Have this looked into by a pro.
A knocking noise can occur from worn engine mounts. When the rubber insert on the engine mounts are old and brittle the chassis is not protected from the weight of the engine. Creating loud vibrations that get louder as the vehicle goes faster.