A new light on your dashboard? You don’t figure out why it doesn’t turn off… It’s typical, a vehicle is elaborate and there are many factors why a light could come on. In the event that your glow plug light comes on while driving your Toyota 86, it may reveal different problems. On this page, we will do anything we can to help you see things more clearly. First, we will discover how the preheating light on your Toyota 86 operates, and then the different reasons it lights up when you are driving

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What is the role of my Toyota 86 glow plug light?

The main intent of the engine glow plug light, which is in most cases represented by a yellow coil, is to assure that your glow plugs are working effectively. In reality, it must light up when you switch on your Toyota 86 to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not meant to stay or come on while driving with your car. But, if it comes on while driving, it may reveal several issues, we will try to explain the main ones.

What to do if the glow plug light comes on while driving on my Toyota 86?

A glow light that comes on while driving on your Toyota 86 or at any other time other than when the engine is started is meant to alert you to a problem other than your spark plugs, we will take a look at this right now. In any case, plug in your car to the diagnostic tool will allow you to accurately interpret the cause for the light up of your glow light.

My Toyota 86 glow light comes on and I’m having a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Toyota 86 and that you also encounter a loss of power. In this case, different trouble can demonstrate its presence. Here is a list of the main factors:

  • Issue of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is clogged, in such a case, it is obvious that your preheat light comes on while driving on Toyota 86 because it is one of the issue of which it is designed to alert you. Have the status of your valve checked out
  • Issue linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can lead to turbo boost and a disturbance in the performance of the turbo.
  • Issue in connection 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 functioning.
  • Finally, the last problem that could lead to a glow indicator light on your Toyota 86 coupled with a loss of power, is that your fuel filter is too dirty, you should encounter 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 Toyota 86

Finally, we’ll give you the reasons for a glow plug light that comes on on your Toyota 86 without you feeling any difference in power or car behaviour. In general, this is an electronic problem:

  • 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 the other options first because it is not easy to find it alone, we advise you to go to your technician.
  • Faulty injection pressure sensor, ECU error
  • If perhaps you have any additional questions about the Toyota 86, do not hesitate to consult our Toyota 86 category.