A new warning light on your dashboard? You don’t figure out why it doesn’t switch off… It’s typical, a vehicle is elaborate and there are various reasons why a light may come on. If your glow plug light comes on while driving your Toyota Land Cruiser Serie 90, it may point out different problems. In this post, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Toyota Land Cruiser Serie 90 operates, and then the different reasons it lights up when you are driving

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What is the goal of my Toyota Land Cruiser Serie 90 glow plug light?

The primary intent of the engine glow plug light, which is most of the time represented by a yellow coil, is to guarantee that your glow plugs are working correctly. Indeed, it must light up when you switch on your Toyota Land Cruiser Serie 90 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. Nevertheless, if it comes on while driving, it may indicate different issues, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Toyota Land Cruiser Serie 90?

A glow light that comes on while driving on your Toyota Land Cruiser Serie 90 or at any other time other than when the engine is started is designed to inform you to a fault other than your spark plugs, we will look at this now. Whatever the case, plug in your car to the diagnostic tool will allow you to carefully translate the motive for the light up of your glow light.

My Toyota Land Cruiser Serie 90 glow light comes on and I’m having a loss of power

The first possibility is that you notice that your glow plug light comes on while driving your Toyota Land Cruiser Serie 90 and that you also encounter a loss of power. In such a case, different trouble can demonstrate its lightning. Here is a list of the main reasons:

  • Trouble of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is blocked, in this case, it is expected that your preheat light comes on while driving on Toyota Land Cruiser Serie 90 because it is one of the failures of which it is intended to notify you. Have the status of your valve inspected
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can bring about turbo boost and a perturbation in the operation of the turbo.
  • Problem related 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 functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Toyota Land Cruiser Serie 90 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 Land Cruiser Serie 90

Finally, we’ll give you the reasons for a glow plug light that comes on on your Toyota Land Cruiser Serie 90 without you feeling any difference in power or car behaviour. In general, this is an electronic fault:

  • Glow plug relays or fuses to be changed, 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 get rid of the issue.
  • You have a false contact somewhere in your electrical circuit, check the other solutions 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 Land Cruiser Serie 90, do not hesitate to consult our Toyota Land Cruiser Serie 90 category.