We’ve all been there. Your car has been running like a pro for so long, you approach that red light, and your car starts to shake when you stop. If you’re wondering “Why does my car shake?” then you’ve come to the right place.
With the average auto repair bill falling between $500 and $600, we always dread the possibility of a major issue. Luckily, there is some hope for an easy, pain-free, and affordable fix.
Let’s talk about the most likely reasons for a shaking car engine and what you should do.
Why Does My Car Shake When Idling?
There are a number of reasons why your car might be shaking. It’s a common side effect of many issues that come with some mileage on your vehicle. Let’s talk about the most common ones.
- Broken Motor Mounts
Your motor sits on mounts attached to the frame of your vehicle. If it becomes disconnected, the motor will shake freely as it is running. While you are driving, it is less noticeable because the motor is less free to move.
This is a fairly easy fix, but if you want to know if this is the cause before bringing it in put your car in neutral and see if the shaking stops or decreases significantly. If it does, that is a good indicator that broken motor mounts are the cause.
Worn out, damaged, or poorly adjusted timing belts, as well as other belts, can cause other parts of your engine to stop functioning properly.
This is easily diagnosed by your mechanic, and a simple adjustment is often inexpensive. There are also ways to self-diagnose a failing timing belt.
- Spark Plugs
This is one of the most common causes of a shaking vehicle. A worn-out or dirty spark plug will not fire properly. This means that they aren’t igniting the fuel in each of the piston cylinders in a timely manner.
Dirty spark plugs are easy to clean, but they may as well be replaced as they are generally quite inexpensive. Don’t leave a damaged one in for too long, as it may cause other issues over time.
- Dirty Fuel System
A dirty or faulty fuel intake system is well-known for causing engine shuddering. Buy some fuel system cleaner and get the fuel pump checked to ensure that it is in proper condition.
Without a steady flow of clean fuel, the engine can shudder, which leads to further damage over time. Take this one to the professionals. Remember, there are some car repairs you shouldn’t do yourself.
Every car has vacuum hoses, these connect to different parts of your engine and help to clear the exhaust fumes. A hose that is leaking or broken can cause huge amounts of shaking in your engine.
If your hoses are disconnected or worn out, this will eventually cause serious damage to your engine, so it is best to consult a professional.
Hopefully, you can now walk out to your car and get the answer to your question, “why does my car shake?”
If you are unable to figure it out for yourself, you should definitely speak to a professional mechanic to avoid any serious damage in the future.
If you are looking to keep your car in the best possible shape, then check out some basic car maintenance tips for beginners!