A new warning light on your dashboard? You don’t figure out why it doesn’t shut off… It’s normal, a car is complex and there are various reasons why a light may occur. In cases where your glow plug light comes on while driving your Volkswagen Golf 3, it may signify different concerns. In this post, we will do anything we can to support you see things more clearly. First, we will find out how the preheating light on your Volkswagen Golf 3 operates, and then the different reasons it lights up when you are driving

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What is the purpose of my Volkswagen Golf 3 glow plug light?

The primary role of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to ensure that your glow plugs are working effectively. In fact, it must light up when you switch on your Volkswagen Golf 3 to tell you that they are heating the intake air in your cylinders and must go out after a few moments when the engine is running. This preheat light is therefore not supposed to stay or come on while driving with your vehicle. But, if it turns on while driving, it may indicate multiple issues, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Volkswagen Golf 3?

A glow light that comes on while driving on your Volkswagen Golf 3 or at any other time other than when the engine is started is designed to alert you to a problem other than your spark plugs, we will check out this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to accurately understand the explanation for the light up of your glow light.

My Volkswagen Golf 3 glow light comes on and I’m encountering a loss of power

The first possibility is that you recognize that your glow plug light comes on while driving your Volkswagen Golf 3 and that you also encounter a loss of power. In this instance, different trouble can explain its presence. Here is a list of the most important reasons:

  • Trouble of EGR valve, in reality, if you undergo a loss of power, it is possible that your EGR valve is blocked, in this case, it is rational that your preheat light comes on while driving on Volkswagen Golf 3 because it is one of the issue of which it is intended to warn you. Have the status of your valve tested
  • Issue linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can result in turbo boost and a perturbation in the performance of the turbo.
  • Issue associated with the injection, either an injector that has seized up or the injection pump that is broken by filings or other possible foreign bodies that disrupt its proper performing.
  • Finally, the last problem that could lead to a glow indicator light on your Volkswagen Golf 3 coupled with a loss of power, is that your fuel filter is too dirty, you should come to feel jerks because of a bad fuel flow in the engine.

My glow plug light comes on or is flashing but no difference on the performance of my Volkswagen Golf 3

Finally, we’ll give you the reasons for a glow plug light that comes on on your Volkswagen Golf 3 without you feeling any difference in power or vehicle behaviour. Ordinarily, this is an electronic problem:

  • Glow plug relays or fuses to be replaced, test and change if necessary.
  • A contactor/potentiometer on one of your pedals (brake, accelerator or clutch) has failed, often a simple de-seizure will be enough to resolve the problem.
  • You have a false contact somewhere in your electrical circuit, check the other alternatives first because it is not easy to find it alone, we suggest you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • If you have any additional questions about the Volkswagen Golf 3, do not hesitate to consult our Volkswagen Golf 3 category.