If its manual that would be the cltuch slipping.
Tranny problem.
Pressing on the accelerator increases engine rpm (revolutions per minute) which in turn increases wheel/tire rpm which increases vehicle speed.
can you please restate that question in ENGLISH so that every one can understand
Excessive engine RPM....low oil level.....engine component wear/stess/fatigue ....over heating....
Poor lubrication. Excessive rpm's. Defective piston. Problem with the wrist pin, bushing or piston rod.
With the car on, press the accelerator pedal.
Driving in low gears. Pushing hard on the accelerator ("flooring it"). Going uphill. Driving with excessive weight (like a trailer). Either shift up or lay off the gas to bring your engine speed down. This is a classic symptom of a "worn clutch" in a manual transmission vehicles. The friction disc cannot transfer power under load so it slips under load causing excessive engine reving. Excessive engine RPM at idle can be caused by a vacuum leak or by a stuck Idle Air Control (IAC) valve.
Because your foot is on the accelerator
Excessive vibrating at low RPM can be caused by worn-out engine mounts. These pieces mount the engine to the frame of the vehicle, and when they wear out, the engine can literally lift and shift out of place when the car is running
check your accelerator...
As engine rpm increases so does pto speeed And if you tach your motor to an excessive amount of RPMs while the PTO is engaged, it will destroy that PTO, leading to zero PTO RPMs.
Fuel Pressure