VW Polo Rattling Noise When Accelerating

VW Polo Rattling Noise When Accelerating: 5 Reasons

Volkswagen Polo is a car that offers reliability. Yet, you may be frustrated lately as it makes a rattling noise when accelerating. We all have been there before.

So, how do you fix VW Polo rattling noise when accelerating?

The issue can be caused by pre-ignition. Switching to a higher grade of fuel can make it go away. Deteriorating turbo can also be another reason. You have to swap the turbo. Another reason for such noise is the worn alternator belt. Replacing the alternator belt is required to resolve the issue.

These are some basic reasons why your VW Polo makes rattling noise when accelerating. We went deep into the topic to properly fix the issues.

Let’s jump right into it.

5 Reasons for VW Polo Rattling Noise When Accelerating

You might be wondering why do I hear a rattle when I accelerate?  VW Polo can face some common difficulties to efficiently perform. Thus, such noise can happen after a certain period.

Source: candsservice.com.au

Well, there are 5 reasons behind Volkswagen Polo rattling noise. The problems are stated below.

Problem 1 of 4: Pre-Ignition

VW Polo pre-ignition is a very common problem. Pre-ignition occurs when ignition happens before the piston reaches the top of its stroke. It can ruin pistons, valves, and connecting rods.

Also, using a cheap ignition coil can cause pre-ignition. So, knowing the difference between cheap ignition coils and expensive ones is necessary.

Problem 2 of 4: Worn Alternator Belt

Another probable cause of your VW Polo car noise is a worn alternator belt. It supplies power to different components from the engine. However, when the alternator belt is worn, the crankshaft and pistons grind more. Thus, the rattling sound.

Problem 3 of 4: Engine Mount Corrosion

The VW Polo engine is mounted in an engine mount. However, being exposed to acid or air can cause it to get corroded. It is bound to happen after a couple of years.  

You might be wondering:

Why is my VW engine rattling?

A corroded engine mount cannot hold the VW polo engine correctly. For that, the engine moves around the engine mount. This causes VW noise when accelerating.

Source:carfromjapan.com

To get rid of the noise, you might be looking for some quality engine mounts. And luckily, we got some quality engine mounts for you:

That’ll keep your busy engine in check! Try them out!

Problem 4 of 4: Broken Wheel Bearing

Volkswagen Polo’s wheel bearings can also be broken. For that reason, it creates a rattling noise when you accelerate.

These are 5 common reasons why your VW Polo rattling noise when accelerating. We also troubleshoot the problems and provide solutions.

Let’s jump into the next section.

Troubleshooting VW Polo Rattling Noise When Accelerating

We figured out the problems of VW Polo rattling noise when accelerating. Now, you might be thinking about how to fix rattling noise when accelerating? 

Well, fear not. We troubleshoot all the problems and provide solutions in this section.

So, let’s jump right into the main topic.

Troubleshooting 1 of 4: Pre-Ignition

You might be wondering what’s the rattling noise coming from the engine? Most likely it is pre-ignition.

This noise rattles by an early ignition of an air/fuel combination in the crankcase. This condition of VW Polo happens for various reasons.

Firstly, the main issue can be improper fuel or low-grade gasoline. 

Secondly, engine overheating can also cause pre-ignition. 

Lastly, the dirty EGR valve of the Volkswagen Polo can cause the problem.

Let’s see the solution for each stated issue.

Solution:

First, change your fuel. If you are using a low-grade fuel, then change it to a higher one. The issue can damage your piston permanently and cause a louder rattling noise. However, changing to higher grade fuel can remove the issue.

Secondly, engine overheating can cause the issue. To fix the problem you need to properly check the cooling system and ventilation. Sometimes, these get dirty so cleaning them properly will do the trick. 

If that doesn’t solve the issue consult a mechanic.

Lastly, your EGR valve can be dirty. Cleaning the throttle body using a throttle body cleaner will solve the problem. It should function smoothly after you get rid of the carbon buildup.

Also, do clean the fuse box terminal to keep your engine running smoothly.

Troubleshooting 2 of 4: Worn Alternator Belt

The rattling sounds of VW Polo while accelerating might indicate a worn engine belt. It might also indicate that one of the belt’s pulleys is failing.

This will cause your VW Polo not to speed up. Also, it can cause failure to your engine.

Let’s see the solution for the stated problem.

Solution:

Firstly, check the alternator belt for any oil or dirt. Sometimes all it needs is a cleaning. Use dish soap with 1/2 quart of hot water to clean the alternator belt.

However, for a worn-out alternator belt, you need to replace the belt. Keep the rough section of the belt close to the piston while installing the new belt. The tension should then be correctly adjusted. Then start the engine and let it idle for a few minutes.

Troubleshooting 3 of 4: Worn Engine Mount

The VW Polo engine weighs about 2364 pounds! If your engine mount gets corroded or worn out, this heavy machine will wobble around. Hence you will hear a rattling noise.

Let’s see the possible solution for this problem.

Solution:

If your engine mount is worn-out, then unfortunately you need to completely replace it. The longer you wait, your engine will cause a louder rattling noise.

Replacement of a worn-out mount might cost anywhere from $250 to $600, for VW Polo. Actual motor mounts cost between $25 to $150, depending on the cost of materials. 

Source: cartreatments.com

Troubleshooting 4 of 4: Broken Wheel Bearing

Your VW Polo’s wheel bearing can be broken. For which your van makes rattling noise when accelerating. 

If that’s the case you may lose the balance of your car. The car will feel much heavier to you and steering will become hard.

Let’s see the possible solution for the problem.

Solution:

You need to replace your wheel bearing for the VW Polo. We recommend using the Swag wheel bearing VW Polo variant.

Firstly, put chocks or large bricks behind your wheels. Then use a 1/2 inch ratchet to loosen up the VW Polo tire’s lug nut.

Now, lift your car with a hydraulic lifter. Afterward, remove the lug nuts.

From now, remove the brake caliper carefully. For VW Polo, you need a 3/8 inch ratchet to unbolt the disk. Then use a screwdriver to remove the caliper.

Further, now remove the outer wheel bearing and expose pins. Now, rub bearing grease to the casing.

Lastly, install the new bearing face down. Apply grease and install the lug nuts. After that, carefully install the brake caliper.

That’s all about the troubleshooting of the stated problem. If you DIY to fix the issue then wear protective goggles and gloves. Otherwise being exposed to different car oil can cause headaches.

FAQs

What’s the Expiry Range of a VW Polo Engine?

VW polo has a powerful engine for a hatchback-type vehicle. The engine is designed to run more than 100,000 miles before expiring.

What is the Fuel Type of VW Polo?

Volkswagen Polo needs petrol as gasoline to run. It has a tank capacity of 45L. So, while you are on the road, you don’t have to worry about fuel. 

What is the Mileage of VW Polo?

On regular use, you can get a mileage of 16kmpl. On the highway, however, you can get 17kmpl mileage.

Conclusion

That’s all about the issue of VW Polo making rattling noise when accelerating. Here is one piece of advice, always use neutral gear in traffic to save fuel.

That’s all from us! For any query comment down below.

Take care!

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