Could be a small thing like wheels out of balance 40+ "Noisy Inside Car" bad wheel bearings 30+ mph also decelerating harder to control "Steering wheel wobble "on accelerating / decelerating" "Noisy Inside Car" steering linkage: causes the steering wheel to wobble at 40+ mph decelerating harder to control "Steering wheel wobble "on accelerating / decelerating" My brothers car had the above problems I changed his rear spindle, outer, tie rods, "both were shot" bad bearing "blown bearing"
It could be dirty spark plugs or you need a wheel alignment. If that doesn't work you might have a fuel blockage.
the spare tyre.
between 85 - 100 mph
It would be a transmission issue, not up shifting. If the engine is in "limp mode" it will not accelerate over a set mph.
Normally this is caused by a tire out of balance or a bent wheel.
The tire needs to be balanced or the shock is dead.
i would really like to know myself
possibilityThe car is out of alignment or you have a wheel out of balance.
Bad speed sensors can cause the car to hesitate when accelerating at speeds below 20 mph. The blockage of the air filters can also cause the car to hesitate when accelerating at speeds below 20 mph.
Check the wheel balance
The impact speed for each car is 50 mph. During the crash, both cars are accelerated from a speed of 50 mph to zero, hence the impact speed is 50 mph. The relative speed between each car, however, is 100 mph.