Engine is in need of tuning.
No the can go faster downhill or uphill
gravity!
Gravity. The car is heavy and doesnt want to move, so you must excelerate to make the car go uphill. If a car is going downhill, the is no need to excelerate because gravity is pulling the car downhill.
Time for a tune up.
check the air intake
Gravity if going uphill. Friction.
If the slope is 'uphill' then the car is going faster
95 lin town car when turning on air conditioner and the clutch kicks on in the air compressor it jerks and the jerks at the same time car experiencing loss of electricity from engine when it jerks
no .... no way.
The car is lighter in weight, so requires less effort from the engine to overtake a heavier truck.
Needs new plugs and leads.
gravity. Going uphill is always harder thatn going along the flat.