Hello, the idle engine is noisy, and the car feels wobbly because the engine is not working smoothly. Please check whether the cylinder pressure, ignition spark energy, throttle sensor, idle motor and engine foot pad are normal. It may also be related to air intake. Jitter is caused by engine deflagration, and piston carbon deposition can also cause this phenomenon. Check the fault code, and if there is no fault code, check the exhaust system.

If you want to hear the sound of the engine, you must find a quiet place, because the sound insulation effect of better cars is ideal now. If you don't look at the engine tachometer and don't know that the car is in a burning state, you may turn the key and ignite again. When monitoring the engine, generally follow the following steps:

1. During engine starting, the starting motor should not have harsh sound; The engine idle "chug sound" is even and there is no abnormal sound; The idle speed is stable at about 850 rpm.

2. Gently step on the accelerator to slowly increase the engine speed, and there should be no noise in the process. Individual models will vibrate at a fixed speed, that is, the whole body will vibrate (if the vibration of * * * is very slight, it should be normal), and the vibration phenomenon of * * * after this speed should be eliminated; After the engine speed exceeds the maximum power point speed, the sound is generally obvious, but there should be no metal rubbing sound.

3. Press the accelerator pedal quickly, and the sound of engine power improvement should be smooth and without stagnation; Carefully distinguish the engine speed sound. The main sources of noise are: if the valve is loud, it is suspected to jack up the valve; All kinds of belt rotation sounds, if loud, may be the friction between the belt and the body; It is doubtful whether the engine makes other rubbing sounds to cover up the sudden sound.

4. Find a suitable place and drive the vehicle for 5- 10 minutes under complicated road conditions. After stopping, the idle speed should remain unchanged and the sound should be the same as before.

5. Open the hood and listen to the sounds on both sides of the engine. At the same time, move the throttle control raft by hand, and then listen carefully to the sound of the engine according to the points mentioned above. It's hard to say based on your description. First you have to judge the source of the sound. Is the throttle struggling to accelerate slowly? Let's invite a professional master to listen. I guess it's not a big problem. It may be a small problem with the tire bearing.

I hope I can help you!