A car that is jerking at high speeds probably needs a tune-up. Barring any major mechanical issue, this will solve the problem.
Slippage in the transmission or a bad torque converter
you may not be at a high enough rpm
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.
wheel balance is out.if it jerks alot at high speeds possibly a tire seperation.if those two possibilities check out then check the toe angle of the front suspension.
islam.
could be failing transmission
rev limiter will only let the RPM's get so high then it cuts back
If you hit it at high speeds in a car, it is likely to be the death of you.
due to the preasure
Yes, this situation could have something to do with the alternator. It could also have something to do with the solenoid, and the spark plugs as well.
Definately avoid driving at high speeds, and get it in to see a mechanic to see what is going on. It might be nothing, but it could be something serious.
Yes it will.