Shaking and running rough while idling and accelerating.

SOURCE: 2002 pontiac grand am shaking and no acceleration

does your "Service Engine Soon" light come up? If it does get a repair man to read the code.

Have you driven the car for about 150,000Km? then it could very well be that one or two of your spark plugs have stopped firing. You need to get that spark plug replaced. Remember, when replacing spark plugs, it is adviced that you should replace all of them at once.

SOURCE: Rough idle, Car shakes, sputters and misfires upon acceleration

It sounds like you may have a problem feeding the fuel to your engine, I had the same problem with my 89 RS. All the 1989 model's fuel systems were recalled. I think you may need a new fuel pump. The fuel pump is located inside the gas tank in the rear of the car right under the rear axle. The fuel pump itself isn't too expensive, but with other small parts such as the electrical harness upgrade and fuel filter and the labor you should be looking somewhere in the $500 range. I hope this helps.

SOURCE: My 2001 volvo s40 shakes when I accelerate past 30 mph

it could be a motor mount check the condition of it or it can be that something with the suspension might need attention . . those things can cause vibration at certain speeds

SOURCE: Shaking during acceleration between 25-45 mph

are all of your spark plugs firing right?

SOURCE: 1990 Toyota Pickup

carb or Fuel injected try cleaning either one of these bad distributor cap or rotor or distributor good luck