Your Chevrolet Captiva often stalls when the engine is cold, but only in that situation, and not at all when the engine is hot, and you have trouble finding its origin? This problem, although less dangerous than an engine that stalls while driving, still deserves your attention because it could be the beginning of a more serious problem in the future.
In this article, we will try to tell you about the various problems you might face when your Chevrolet Captiva stumble in cold start so that you can see more clearly and not necessarily go to the garage, which often charges a high price for the service and does not always solve the problem.
Different reasons to stall for a cold engine
First, we will discuss failures related to mechanical problems. The second part will be devoted to electronic problems.
1: Mechanical failures that makes your Chevrolet to stall
First thing to think about, the idle actuator. As a reminder, the latter’s role is to regulate the engine speed. It may be difficult for the latter to connect to the engine while the engine is still cold.
Another simpler factor, but also common in these cases, is that the battery is probably low, and therefore does not have many reserves until the engine has started. This means that after “heating” the engine, the battery has accumulated enough energy to keep your Chevrolet Captiva on. However, it has difficulty maintaining autonomy once the engine is switched off. Which would explain why it only chocks cold.
Also remember to check your dashboard, and if by any chance an indicator light is not lit.
However, if your car always starts the first time, it is very likely that it does not come from your battery.
If it is not from the battery, look at some of the parts to be cleaned, such as filters, injection pump, or pressure regulator. That could make your Chevrolet to stall if cold.
Keep in mind that a simple, heavily soiled part can disrupt the entire mechanism of your Chevrolet Captiva . Check all your parts to be able to exclude this type of failure.
Once mechanical breakdowns and fouling have been put aside, let’s look for electronic parts that could cause you problems.
2 : Electronic failures
The first essential parts are the onboard computer. the MCU (Motor Control Unit) , acts as a platform for exchanging and sending information throughout your vehicle. Electrical signals are received, processed and sent back as information to the various parts of your Chevrolet Captiva .
For example, when you turn on your indicator, your MCU box receives the information, processes it, and then redirects it to your flashing room, which will then light up. We have taken here the example of the indicator, which would not prevent you from driving. If this information was linked to the engine of your Chevrolet Captiva , then in this case it is possible that it may stall cold.
In addition, let us talk about the calculator. This essential part of your vehicle is a central element of a system called an embedded system. This means that it electronically manages the various functions of your vehicle, and therefore the ignition of the engine, which could have an impact on your Chervolet Captiva that stalls.
Find out more about this part if you have any doubts about it.
Directly linked to your computer, the TDC sensor.
Indeed ,the internal combustion motor must have a precise ignition timing setting in order for all the cylinders to fire in the correct order and at a specific moment. If the TDC sensor is damaged, it will not send this information to the onboard computer. Consequently, as a safety measure, the ECU will stop the ignition system and your Chevrolet Captiva wont start.
FInally, you might want to check your alternator.
It is essential for the engine to start because it switches the battery on, and it is the engine that produces electricity to keep the battery charged while you drive.
This means that indirectly you could have a battery problem. Imagine that your alternator does not provide enough electricity to your battery, so your battery would in turn be unable to keep your Chevrolet Captiva on and therefore make it stall.
As we have seen in these various causes of cold stalling cars, this often leads back to the battery or directly related parts. However, this may not be the only reason, do all the necessary tests to analyze the proper functioning of each part. Finally, the last thing to think about with your Chevrolet Captiva is to ask yourself this question: have you recently started refuelling at a new gas station? If so, it may be unintentionally degraded due to contact with water or impurities. This would impact your engine, which could start to stall quickly.
However, if this does not happen as soon as your engine is hot, then the impurity of the fuel is exonerated. The problem would be recurrent no matter if your engine is hot or cold.
Hoping to have been able to enlighten you about the various potential failures, do not give up in your research if you have not yet found.