A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, a car is elaborate and there are many causes why a light may occur. In the event that your glow plug light comes on while driving your Opel Vectra, it may show different things. In this article, we will do everything we can to support you see things more clearly. First, we will find out how the preheating light on your Opel Vectra operates, and then the different motives it lights up when you are driving

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What is the goal of my Opel Vectra glow plug light?

The main role of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to make sure that your glow plugs are working properly. In fact, it must light up when you switch on your Opel Vectra 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 car. However, if it comes on while driving, it may show several issues, we will try to explain the main ones.

What to do if the glow plug light comes on while driving on my Opel Vectra?

A glow light that comes on while driving on your Opel Vectra or at any other time other than when the engine is started is intended to inform you to a problem other than your spark plugs, we will check out this now. Whatever the case, plug in your car to the diagnostic tool will allow you to properly translate the cause for the light up of your glow light.

My Opel Vectra glow light comes on and I’m experiencing a loss of power

The first possibility is that you perceive that your glow plug light comes on while driving your Opel Vectra and that you also experience a loss of power. In this case, different problems can describe its lightning. Here is a list of the main causes:

  • Problem of EGR valve, in reality, if you go through a loss of power, it is possible that your EGR valve is blocked, in such a case, it is obvious that your preheat light comes on while driving on Opel Vectra because it is one of the problem of which it is meant to notify you. Have the status of your valve checked
  • Trouble associated with 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 operation of the turbo.
  • Trouble relevant to the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that affect its proper performance.
  • Finally, the last problem that could lead to a glow indicator light on your Opel Vectra 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 Opel Vectra

To finish , we’ll give you the motives for a glow plug light that comes on on your Opel Vectra without you feeling any difference in power or car behaviour. In general, this is an electronic problem:

  • Glow plug relays or fuses to be changed, test and replace 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 repair shop.
  • Faulty injection pressure sensor, ECU error

    • If you wish more tutorials on the Opel Vectra, go to our Opel Vectra category.