As soon as you descend below a certain speed your car starts to slow down and sometimes even the engine stops for no apparent reason?
It seems obvious that this is abnormal. In this article we will try to give you an answer of why your Chevrolet Captiva stalls at idle, so that you can see more clearly before potentially going to the garage and get a steep bill to repair your car.
Of course, if this happens while driving at relatively 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 think about, and it may seem strange, but it has happened to some people before: Do you get fuel for your Chevrolet Captiva all the time at the same pump? If so, it could be from there. Try changing gas pumps, and see what happens. This is unlikely but it doesn’t cost much to try it. It is possible that the fuel you get from here contains dirt or impurities that damages your engine and make it stall.
If nothing changes, let’s look at the more technical causes you are exposed to on your Chevrolet Captiva.
Electronic parts that can cause your Chevrolet Captiva to stall at idle :
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 composed of a multitude of electronic elements whose purpose is to receive electrical signals, processing these data, and sending information to the various parts of your Chevrolet Captiva. It is a platform for managing your car’s information.
As you have understood, if it were to malfunction, the consequences could be serious. A motor that stops can be a symptom.
Apart from that, look at the engine speed sensor side, or the onboard computer. he is a platform for exchanging calculations and is therefore essential 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 acts as a relay platform for all your calculators. It is similar in some ways to a computer motherboard. So you understand the importance of this on your Chevrolet Captiva, it could explain why you stall at idle.
Speaking of sensors, also consider your TDC sensor. His role is to send information to the calculators regarding the position of the pistons in order 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 Chevrolet Captiva to be powered. Same concern if it came from the ignition coil.
In the last position, because this case is much rarer, it might occur that a wire or connection is damaged, and your computer could no longer perform properly and your Chevrolet could stall.
So here’s to the electronic causes. Let’s now look at the mechanics.
Mechanical part that can cause your Chevrolet Captiva to stall at idle :
First, simply a clogged filter can disrupt the life of your engine. Remember to clean it regularly. The injection pump, or even the pressure regulator, are also parts to be checked.
Also potentially involved is the idle actuator.
Its purpose is to regulate the engine speed as part of the overall idle control of the engine management system. Directly impacting your Chevrolet Captiva’s engine therefore.
Another factor, more rare but also possible, is Neiman’s contactor. It is what allows to lock the steering wheel for safety when we turn off the ignition. It is related to the engine so a failure could also have consequences on the engine and make your car to stall at idle.
Here are the main causes, whether electronic or mechanical, that could cause your Chevrolet Captiva to slow down and stall.
In a few words, first check the simplest things, dirty pieces, then find out about the electronic parts that may be involved.
If you were about to start reparing on your own, be really careful on what you do, there is no substitute for the expertise of a professional.