A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, a vehicle is elaborate and there are various factors why a light could come on. In cases where your glow plug light comes on while driving your Chevrolet HHR, it may reveal several things. On this page, we will do everything we can to help you see things more clearly. First, we will find out how the preheating light on your Chevrolet HHR works, and then the different reasons it lights up when you are driving

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What is the goal of my Chevrolet HHR glow plug light?

The main role of the engine glow plug light, which is in most cases represented by a yellow coil, is to make sure that your glow plugs are working properly. Indeed, it must light up when you switch on your Chevrolet HHR 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. However, if it comes on while driving, it may show several failures, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Chevrolet HHR?

A glow light that comes on while driving on your Chevrolet HHR or at any other time other than when the engine is started is intended to inform you to a fault other than your spark plugs, we will look at this now. Whatever the case, a switch to the diagnostic tool will allow you to carefully understand the motive for the light up of your glow light.

My Chevrolet HHR glow light comes on and I’m going through a loss of power

The first probability is that you notice that your glow plug light comes on while driving your Chevrolet HHR and that you also encounter a loss of power. In such a case, several trouble can explain its lightning. Here is a list of the main factors:

  • Trouble of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this case, it is logical that your preheat light comes on while driving on Chevrolet HHR because it is one of the problem of which it is meant to notify you. Have the status of your valve checked
  • Problem related 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 disturbance in the operation of the turbo.
  • Problem related to the injection, either an injector that has seized up or the injection pump that is broken by filings or other possible foreign bodies that disturb its proper performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Chevrolet HHR coupled with a loss of power, is that your fuel filter is too dirty, you should get 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 Chevrolet HHR

To finish , we’ll give you the reasons for a glow plug light that comes on on your Chevrolet HHR without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be swapped out, 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 fix the trouble.
  • 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 recommend you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

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