Automatic transmission automobile uphill jitter

The most common cause of automobile jitter is that the throttle valve is too dirty or the fuel injector has too much carbon deposit. When there is too much carbon deposit in the engine, the gasoline sprayed by the fuel injection head will be absorbed by the carbon deposit during the cold start, which leads to the lean mixture during the cold start and makes it difficult to start.

In this case, only when the gasoline absorbed by carbon deposits is saturated can it easily enter the car. After getting on the bus, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine for combustion, and the mixture will become thick, and the combustible mixture of the engine will be diluted and concentrated, resulting in idling jitter after cold start. The lower the temperature, the more oil is needed for cold start, and the existence of carbon deposit will affect the smooth start.

Extended data:

Automatic car uphill method:

1, start the uphill section with automatic gear, first tighten the hand brake, and then start with your right foot on the brake pedal.

2. Shift the gear to the position of 1 or 2 (in some cars, 1 and 2 are marked in Pinyin, only high-end gears are marked with D, and don't shift to D), release the brake, put your right foot on the accelerator pedal, and slowly lower the handbrake with your right hand.

3. When going downhill, you should also use low gear, that is, 1 gear or second gear. Don't step on the accelerator and inertia downhill, but put your right foot on the brake pedal to control the speed.

The biggest difference between automatic gear and manual gear is clutch and gearbox, which are nothing at ordinary times. But when starting on a ramp, automatic transmission is not easy. When starting, the gear is not easy to shift into the D gear, or you will hear a "squeak" after barely shifting in, and the car will have a slight vibration. In fact, this is a considerable damage to the automatic gearbox, and even the entire gearbox will be scrapped. Manual gear can be used with clutch brake to avoid this situation.

References:

Baidu encyclopedia-automobile maintenance