What Causes Shaking When Starting an Automatic Car?

1 Answers
StMargaret
07/29/25 11:18am
The reasons for shaking when starting an automatic car are: 1. A dirty throttle body causing uneven air intake and uneven operation leading to shaking; 2. Clogged fuel lines causing insufficient fuel supply at low throttle, resulting in uneven operation of engine cylinders and shaking; 3. Transmission malfunction preventing normal operation. The correct steps to start an automatic car are: 1. Turn the ignition key to the power position to initiate the car's computer system self-check for about 6 seconds; 2. Press the foot brake and shift the gear from P to N, then turn the ignition key to the start position to fire up the engine after releasing the foot brake; 3. Press the foot brake, release the handbrake, shift from N to D gear, and slowly release the foot brake.
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