Mechanics is a rather Cartesian profession. But if there is indeed a phenomenon that is sometimes difficult to explain, it is an unstable idle or acceleration holes. Whether for a Toyota Highlander, or any other type of car. But we can help you understand. In fact, the origin can come from a large number of engine block components, even electronic. To find the source of the Toyota Highlander's breakdown, you will have to follow a strict procedure. But above all, we will see the signs of a faulty idle.idle-problem-Toyota-Highlander

Idling problem on a Toyota Highlander: symptoms

Un unstable idle close to stall . It really is the most recurring problem in slow motion. This impression that the engine can stall while driving at a normal speed, or that the Toyota Highlander grazes . It may also happen that stalling occurs. In this case, it is a real danger for the driver. If so, don't wait too long to worry about it. We suggest that you carry out a check via the next paragraph. We can also understand that your Toyota Highlander has a acceleration problem . No more reports this time with an idle problem. Losses of power and acceleration holes will be able to happen for multiple causes. These two phenomena should not be confused. We invite you to browse our files related to power losses.

Toyota Highlander: developing a diagnosis to understand the origin of idling

We have to start by performing a number of relatively easy checks, before going into more detail.

Idle of the Toyota Highlander: exhaust fumes.

A black smoke escapes from the exhaust. This often means that the air and fuel mixture is bad. Or that your air filter is clogged. In both cases, an idling problem can occur on the Toyota Highlander. A White smoke escapes from the exhaust. In this case also it can come from a disturbance. White smoke is often water vapor. It is therefore likely that it is an intake or cylinder head gasket problem.

Checking the engine block components

As we have shown, an idle problem on this Toyota Highlander can come from many constituents. So try to run through the engine block carefully. However, it is still advisable to be very careful and not to touch the engine block components too much, as this can aggravate the problem or conceal the origin of the problem. We obviously suggest that you go to an auto repairer for a more detailed audit. Here, therefore, point by point, the components to be checked.

  • The first thing to do is check all hoses . These can be perforated, or even detached.
  • You will also need to check the sensors and sensors of your engine block. It is nevertheless complex to check that they are working properly. You can find tutorials on youtube, and it often requires electronic devices.
  • Perform a check of pressures hydraulic. Again, pressure controls require adequate equipment.

Idle concerns are common however are complex to recognize. A visual check on your Toyota Highlander allows you to have an idea, however it is better not to venture into DIY enthusiasts.