Why Is My Car Shaking When I Stop or Idling?

Driver feel the car is shaking when stop or idling.

Well-running and idle-smooth engines are an indication that the fuel and air supplied to the engine are mixing at their optimum levels. An engine in good condition can provide the power required to run crucial systems such as electrical systems, air conditioners, cooling systems, and power steering.

When you idle, does your vehicle start to shake? A warning indication is if your vehicle shakes when it stops. Even whether you drive or stop, your car should always run smoothly. Such a vibrating experience is often sensed initially in the steering wheel. If you notice that when you stop and drive at lower speeds, your engine starts shaking, then the time has come for a repair visit.

The following are some of the possible reasons why your vehicle may be shaking while you are at a stop. Continue reading this article if you want to find out more.

Consequences of Rough Idling on Car

Rough idling is often the source of a car’s vibrations. Suppose your vehicle has trouble causing strange vibrations, sometimes referred to as a rough idling. Your car is screaming for help and gives you an alert, try to bring it to a repair shop for assistance. That means a faulty component is on the verge of a breakdown and must be repaired immediately. If you ignore it and wait too long to take action, it may result in you being stuck or being forced to pay for expensive repairs and replacements later on.

Rough idle troubles are frequently caused by poor performance, poor fuel efficiency, having difficulty turning the car, low or high RPMs, and engine issues along the way. Whether you’re driving or just sitting in your car, it should always run smoothly and efficiently. If you feel your engine shaking while parking or driving at moderate speeds, it is time to take it to the repair shop and let the mechanic do the job!

Major Causes of Rough Idling and Shaking Issues in Your Car

Broken Motor Mounts 

Motor mounts are responsible for keeping the engine connected to the vehicle. If the car’s engine is shaking a lot while halted or parked with the engine idling, the motor mounts or the transmissions are damaged or broken. Determining whether or not this is the source of the issue, shift the vehicle in neutral for a few moments. If the shaking subsides, it is a clear indication that a mechanic must check the motor mounts of your car’s engine.

Filthy Fuel Injectors

Vehicles nowadays are as complex and as fuel-efficient as feasible machines. One method provides an optimum volume of fuel to the engine cylinder through high pressures fuel injectors. Fuel injectors are subjected to high temperatures and fuel pressure. With time, its pintles may get stuck with carbon that is left from combustion. The lack of proper dispensing of the correct fuel volume required for combustion and the failure of the spray pattern to generate successful combustion by the obstructed fuel injector will lead to poor performance and rough idling.

Clogged Air Filters 

While you’re driving on the highway, your engine’s air filter is capturing all sorts of pollutants that may be detrimental to your engine’s performance. When these filters get clogged with dust, dirt, and other particles over time, they cannot provide enough air to add air into the fuel mixture for successful combustion. A lack of air leads the car to run expensive, causing a rough idle and increased fuel consumption.

Worn Spark Plugs, Wiring, and Ignition Coil

The combustion process must be successful for the air and fuel combination to be ignited by a spark. The spark plugs, wires, and coils t these components generate the voltage needed to spark each cylinder. The oil and carbon deposits that accumulate on exhausted or worn spark plugs significantly reduce the amount of power caused by ignition.

You are guaranteeing an adequate spark each time by changing your spark plugs per 30,000 to 50,000 miles. You can also avoid electrode damage, which may cause severe ignition system damage. Besides engine failures, and defective ignition components may induce rough idling. Like spark plugs, the ignition coil may begin to crumble with time, leading to malfunction, misfires, and rough idling.

Torn or Cracked Timing Belt

A stretched, broken, or partly torn timing belt or other serpentine belts may also cause a vehicle to shake while idling. The timing belt issue is a warning indication of a timing belt failure that you should be aware of. A timing belt that entirely fails may cause severe engine damage.

It is crucial during timing belt replacement intervals to follow the guidelines and recommendations made by the manufacturer. It is not inexpensive to repair a timing belt, as you will replace the water pump in most instances, but failing to replace it may cost you hundreds of dollars for more damages.

Misadjusted or Worn Out Belts

Timing belts and other belts maladjusted or wear out much like that serpentine belt may produce engine vibrations. If such belts are loosened or torn out, other components of your engine, such as fans, may fail to function smoothly, leading to weird sounds and vibrations. In order to ensure that the belts are in perfect condition, your mechanic can check them out!

Loose or Disconnected Hoses

In many cases, leaky hoses are the root cause of poor functionality and vibration problems. A vacuum hose is found in every automobile; these hoses are connected to various components of the engine and helps in the elimination of gaseous byproducts, often known as exhaust fumes. A leaked or broken hose will make your engine shake enormously. Numerous additional engine issues may arise when your hoses are detached or worn out. Some of the problems you may encounter include your engine malfunctioning, losing power, idling, and shut down completely.

Faulty Mass Air Flow Sensor

A faulty mass airflow sensor (MAF) may cause your vehicle to shake when stopped, which is undoubtedly the least frequent cause. As it aims to measure the air-fuel-to-engine ratio accurately, if the problem occurs and provides erroneous data to the car’s computer, the inaccurate volume of fuel will be injected into the engine.


Whenever you are experiencing any of these indications, in that case, it is crucial that you bring your vehicle into a service center as soon as possible so that they can conduct a multi-point diagnostic to pinpoint the underlying source of the problem. It is crucial to have a professional running a comprehensive diagnostic before your minor issue escalates into a costly repair.