In this video well see about the main cause of a car losing power when accelerating More serious causes of power loss may include: Sensors malfunction – camshaft, oxygen, crankshaft, and more Actuators malfunction – spark plugs, ignition coil, fuel pump, injectors Mechanical malfunction – compression, air filter, fuel filter, clogged exhaust. Your car may lose power for many different reasons. Before heading off to the mechanic, check your air filter and exhaust pipe to ensure they are not blocked in some manner. If your car is losing power while driving and the car jerks when accelerating then make sure the following parts function properly: Low Compression Clogged Fuel Filter Dirty Air Filter Clogged Exhaust Pipe Camshaft Position Sensor MAF Sensor Malfunction Oxygen Sensor Faulty Fuel Injectors Bad or Weak Fuel Pump Clogged catalytic converter Bad Spark Plugs Bad Ignition Coil