As soon as you descend below a certain speed your car starts to slow down and in some cases even the engine stops for no obvious reason?
It seems obvious that this is abnormal. In this article we will try provide you with an answer so that you can see more plainly before perhaps going to the garage and get a steep bill to repair your Lexus ES.
However, if this happens while driving at rather high speeds, do not take any more unnecessary risks. Call a professional urgently. Imagine that this happens to you on the ring road or highway….
First thing to take into account, and it may seem odd, but it has occurred to some people before: Do you get fuel all the time at the same pump for your Lexus ES? If so, it could come from there. Try changing gas pumps, and observe what happens. This is unlikely but it doesn’t cost much to try it. The fuel you get from here may very well contain dirt or impurities that harm your Lexus ES’s engine.
If nothing changes, let’s take a look at the more technical causes you are exposed to on your Lexus ES.

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Electronic part of your Lexus ES :

The first element is the MCU (Motor Control Unit) box. You may wonder what this piece is. In a few words , it is a metal box made of a multitude of electronic elements whose functionality is to receive electrical signals, developing these data, and sending information to the various parts of your Lexus ES. It is a base to manage your car’s information.
As you have understood, if it were to fail to function properly, the consequences could be serious for your Lexus ES. A motor that stops can be a indication.
Apart from that, take a look at the engine speed sensor side, or the onboard computer. It is a platform for exchanging calculations and is consequently vital to the engine.

Another potentially targeted box is the built-in systems interface, which centralizes all the information from the multiple sensors throughout your vehicle. It operates as a relay platform for all your calculators. It is similar in some ways to a computer motherboard. So you figure out the importance of this on your Lexus ES.
Regarding sensors, also consider your TDC sensor.Its role is to send information to the calculators concerning the position of the pistons in in an attempt to determine the engine speed, which will then determine the fuel injection.
Last but not least, consider your alternator, which would no longer allow your Lexus ES to be powered. Same concern if it originated from the ignition coil.
Finally, because this case is much rarer, it might happen that a wire or connection is harmed, and your computer could no longer function properly.
So here’s for the electronic causes. Let’s now look at the mechanics on your Lexus ES.

Mechanical part of your Lexus ES :

First, only a blocked filter can disrupt the life of your engine. Keep in mind to clean it regularly. The injection pump, or also the pressure regulator, are also parts to be checked.
The idle actuator could also very well be involved .
Its purpose is to control the engine speed as part of the overall idle control of the engine management system. ThereforeInstantly affecting the engine .
Another factor, more rare but also possible, is Neiman’s contactor. It is what enables to lock the steering wheel for security when the ignition is turned off. It is related to the engine so a failure may well also have effects on the Lexus ES’s engine.

Here are the main motives, whether electronic or mechanical, that could result in your Lexus ES to slow down.
In a few words, first check the simplest things, dirty pieces, then identify about the electronic parts that may be involved.
If you were about to start fixing on your own, be really thorough on what you do, there is no alternative for the expertise of a professional.

If perhaps you have any additional questions about the Lexus ES, do not hesitate to consult our Lexus ES category.