A new warning light on your dashboard? You don’t figure out why it doesn’t switch off… It’s typical, an auto is elaborate and there are various motives why a light may come on. If your glow plug light comes on while driving your Peugeot 309, it may possibly reveal some issues. In the following paragraphs, we will do anything we can to help you see things more clearly. First, we will find out how the preheating light on your Peugeot 309 operates, and then the different causes it lights up when you are driving

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What is the role of my Peugeot 309 glow plug light?

The primary goal 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 correctly. Indeed, it must light up when you switch on your Peugeot 309 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 motor vehicle. However, if it turns on while driving, it may show multiple troubles, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Peugeot 309?

A glow light that comes on while driving on your Peugeot 309 or at any other time other than when the engine is started is designed to warn you to a fault other than your spark plugs, we will take a look at this right now. No matter the reason, a switch to the diagnostic tool will allow you to properly translate the reason for the light up of your glow light.

My Peugeot 309 glow light comes on and I’m suffering from a loss of power

The first possibility is that you identify that your glow plug light comes on while driving your Peugeot 309 and that you also experience a loss of power. In this instance, some problems can describe its lightning. Here is a list of the main motives:

  • Trouble of EGR valve, in reality, if you suffer a loss of power, it is possible that your EGR valve is clogged, in this instance, it is logical that your preheat light comes on while driving on Peugeot 309 because it is one of the failures of which it is designed to warn you. Have the status of your valve tested
  • 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 operation.
  • Finally, the last problem that could lead to a glow indicator light on your Peugeot 309 coupled with a loss of power, is that your fuel filter is too dirty, you should experience 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 Peugeot 309

Finally, we’ll give you the causes for a glow plug light that comes on on your Peugeot 309 without you feeling any difference in power or motor vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, 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 get rid of the problem.
  • You have a false contact somewhere in your electrical circuit, test out the other solutions first because it is not easy to find it alone, we encourage you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you have any additional questions about the Peugeot 309, do not hesitate to consult our Peugeot 309 category.