Recent vehicles represent an evergrowing budget, whether it is because of maintenance or the unforeseen breakdowns associated with all the new technology built into cars. We usually tend to worry rapidly about the tiniest sign of weakness, and that is a good thing, because a problem on a Mercedes Classe A 4 has to be treated fairly quickly, in any other case it will get worse and affect additional parts. In this article we are going to see the solutions available to you if you are victim of a Mercedes Classe A 4 that vibrates at idle. First we will try to understand why your Mercedes Classe A 4 is vibrating when idle, and secondly what to do if it you have vibrations idle.

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Why is my Mercedes Classe A 4 having idle vibrations?

So we commence our content with the origins of a Mercedes Classe A 4 that vibrates at idle. For this we will have to take a look at the organs that can provoke this tremor. We will specifically focus on the fact that your Mercedes Classe A 4 only shakes at idle, if you feel vibrations at acceleration on Mercedes Classe A 4 vibrations don’t think twice to have a look at our content which is about this trouble. We can already eliminate some parts as possible responsible for this problem. In reality, as you are at a standstill, usually in neutral, we can already clear the vehicle’s transmission, running gear, bearings, suspensions, clutch and flywheel. You should be informed, nevertheless, that diesel engines usually tend to vibrate much more than petrol engines, specifically older vehicles.
Nevertheless, the bad news is that the reason your Mercedes Classe A 4 is shaking at idle is directly related to your engine. The main triggers of this vibration are frequently related to the fuel supply of the car, the ignition or the engine silent blocks. Here are the main roots of this vibration and their repercussions on the performance of your Mercedes Classe A 4:

  • Injection: If the injection of your car is affected and it triggers trembling, you should come to feel some kind of coupling in the engine, as if the car was grazing.
  • Ignition: If, however, it is the ignition of your car that is in trouble, regardless of it comes from a spark plug or the complete ignition, you will come to feel complications in the performance of your engine motor. In reality, there will be sparks that don’t appear and it may be that one or more of your cylinders doesn’t function.
  • Engine silent blocks: The least frustrating trigger of a Mercedes Classe A 4 shaking at idle is indeed the engine silent blocks. They are a form of soft plastic pad that dampen all vibrations and shaking of your car’s engine. When they wear out, they usually tend to lose their task and consequently the vibrations caused by your engine intensify

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What if my Mercedes Classe A 4 is vibrating at idle?

Let’s proceed to the next step, now that you have managed to locate the origins of your trouble or at least to reduce the possible triggers, we will show you to you that there are solutions available to get rid of each of these complications.

  • Injection: If your injection is the trigger, the first thing to do will be to use a strong cleaning product that you will add to your fuel, it will cost you about ten euros, but if the trouble is minor and only a few impurities obstruct their proper working, you can handle it without going to your garage area. If this is not enough, you will have to reflect on a complete cleaning of the injection
  • Ignition: If it is your ignition that is leading to your Mercedes Classe A 4’s idle vibrations, you will need to pass the car through the diagnostic kit to get more information on the exact trouble. And consider a replacement of malfunctioning parts, or an ECU adjustment
  • Motor Silent Blocks: The last motive of vibration at standstill on your Mercedes Classe A 4 is that the vibration originates from your motor silent blocks. This is the repair that will cost you the least. In reality, changing silent blocks should not cost you more than 200€, go to your garage area to make this change and prevent your Mercedes Classe A 4 from shaking at idle.

Here are the main causes and solutions to solve your trouble of vibration at idle on Mercedes Classe A 4, if furthermore to shaking it does not hold idle, do not hesitate to consult our article on this problem.

If you need more guides on the Mercedes Classe A 4, go to our Mercedes Classe A 4 category.