Your Toyota Corolla sometimes stalls when the engine is cold, but only in that situation, and not at all when the engine is hot, and you have difficulties finding its origin? This problem, although less dangerous than an engine that stalls while driving, nonetheless ought to get your attention because it could be the beginning of a more dangerous problem in the future.
In this article, we will inform you about the multiple problems you might face when your car stagger in cold start so that you can react more efficently and not necessarily go to the mechanic, which often charges a high price for the service and does not always get rid of the problem.
Different causes to stall for a cold engine.
First, we will focus on failures associated with mechanical problems. The second part will be focused to electronic problems.
1: Mechanical failures on your Toyota Corolla
First thing to think about, the idle actuator. Once again, the latter’s role is to regulate the engine speed. It may be tricky for the latter to connect to the engine while the engine is still cold.
Another simpler consideration, but also common in these cases, is that the battery is likely low, and therefore does not have many reserves till the engine has started. This should tell you that after “heating” the engine, the battery has accumulated enough energy to keep your Toyota Corolla on. Even so, it has difficulty keeping up with autonomy once the engine is switched off. Which would make clear why it only chockes cold.
Also bear in mind to check your dashboard, and if, by any chance, an indicator light is not lit.
Then again, if your car always starts the first time, it is very likely that it does not come from your battery.
If the battery is not involved, look at some of the parts to be cleaned, such as filters, injection pump, or pressure regulator.
Remember that a simple, heavily dirty part can break up the entire mechanism of your Toyota Corolla. Check all your parts to be able to leave out this type of failure.
Once mechanical breakdowns and fouling have been put aside, let’s try to look for electronic parts that could cause you problems.
2: Electronic failures of your Toyota Corolla
The first important parts are the onboard computer. the MCU (Motor Control Unit) acts as a platform for exchanging and dispatching information throughout your vehicle. Electrical signals are received, analysed and sent back as information to the several parts of your Toyota Corolla.
For example, when you start 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 used here the example of the indicator, which would not stop you from driving. If this information was associated to the engine of your Toyota Corolla, then in this case it may stall cold.
Furthermore, let us talk about the calculator. This essential part of your vehicle is a central part of a system called an embedded system. This means that it electronically controls the various functions of your vehicle, and therefore the ignition of the engine.
Find out more about this part if you have any questions about it.
Directly linked to your computer, the TDC sensor.
Actually ,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. Therefore ,, as a safety measure, the ECU will prevent the ignition system and your Toyota Corolla won’t start.
At last, you might want to verify your alternator.
It is necessary for the engine to start because it switches the battery on, and the engine producesthe electricity needed to keep the battery charged when you drive.
This means that indirectly you could have a battery problem. If your alternator does not provide enough electricity to your battery, it will, consequently, be unable to keep your Toyota Corolla on.
As we have come across in these various causes of cold stalling cars, this often leads back to the battery or directly matching parts. However, this may not be the only reason, do all the required tests to analyze the proper functioning of each part. At last, the last thing to think about with Toyota Corolla is to ask yourself this question: have you fairly recently started refuelling at a new gas station? If so, it may be inadvertently degraded due to contact with water or impurities. This would affect your engine, which could start to stall quickly.
However, if this does not appear as soon as your engine is hot, then the impurity of the fuel is exonarated. The problem would be repeated 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.
If you want more guides on the Toyota Corolla, go to our Toyota Corolla category.