Hot Start Fix – The Best ECU Tuning Summer Solution

Hot Start Fix is one of the most needed ECU tuning solutions, especially in the summer. The reasons often are the known high summer temperatures and the terrible heat, that lead to vehicle problems with the start process.

Usually, the hot start problem is not typical for new vehicles and it appears after some time of usage. It is related to hard start when hot and the engine turns more times before it starts.

In other words, no matter if you have used your vehicle for 15 min or 10 hours, once it is switched off it will not start again immediately while it is still warm.

Not only it is an annoying issue, but hot start problems are risky and can lead to costly repairs and replacements of vehicle parts.

In this article, we will explain in detail the hot start problem and the way it works. After that, we will show you why the hot start fix via ECU remap is the best solution for your vehicle. Let’s start!

 

WHAT IS A HOT START PROBLEM?

We can talk about a “hot start” in a vehicle when the manufacturer has set a start temperature limit of the engine. This limit will be expressed as one of exhaust gas temperature (EGT), turbine inlet temperature (TIT) or interstage turbine temperature (ITT). The start temperature limit may vary by the engine type or the manufacturer.

A hot start problem is when your vehicle’s engine starts easily when cold, but struggles to start when hot after some driving and a brief period of being off. If you know your vehicle well, you will notice such a problem almost immediately when it cranks longer before starting. However, if you are a new vehicle owner, it is very possible to not pay attention to that. The hot start problem means that you will not be able to switch on your vehicle until the engine is cooled usually after 15-20 minutes…

Most modern vehicles are started by the electronic control unit (ECU). To start, the engine has to reach a pre-set rpm value and the whole process is controlled by the ECU start-up map. In some cases, the hot start problems are caused by software settings and in other cases, there are physical issues. The hot start is mainly and mostly known as an issue of all VAG vehicles.

 

REASONS FOR HOT START PROBLEM

If your vehicle’s engine can not start when it is hot, there are some possible faulty vehicle components and reasons for the hot start problem:

– Problems with the fuel system

A possible reason for the hot start problem of your vehicle may be based on issues with the fuel and the fuel system. When the engine is hot, the fuel system can not do its best. The vapor obstructs the fuel, so it can not circulate properly. That causes a hard start of the engine or no start at all.

For example, if you drive your vehicle in hot weather and then stop and turn it off, the engine will continue gaining temperature until a while. During this time there is the highest amount of vapor, so there are big chances the engine to not be able to start immediately. In this case, you should wait for a few minutes before switching the vehicle on.

– Electrical problem with the wiring

Another possible reason may be related to an electrical fault and defect in the wiring harness. It is likely that the starter wire’s gauge is too small. When it is hot, the wire’s gauge has too much resistance and it can not effectively activate the starter. This electrical issue causes starting problems.

Contributing factors that may be a reason for a hot start problem include a faulty solenoid, clogged air filter, insufficient bleed air from the auxiliary power unit (APU)… Also, engine control system issues, ground support unit (GSU) for accelerating the engine during the start, a slow starter motor… In addition, another reason for hot start problems is the loose battery terminal or cable, etc.

 

SYMPTOMS FOR A HOT START PROBLEM:

When the starter turns the vehicle’s engine over and the start is not successful, we call it “crank”. So, based on the type of crank, here are some of the symptoms for a hot start problem:

– The engine of your vehicle cranks, but very slowly

– The engine cranks but never fires

– The vehicle’s engine does not crank at all

 

HOT START FIX VIA ECU REMAP

It is important to know that hot start problems can cause serious damage to your vehicle. It is true that they are fixable, but when it comes to a replacement of physical vehicle components, the repair may be a considerable cost…

Before spending a lot of money on expensive repairs, you should know that there is a far better solution for your vehicle – hot start fix via ECU remap. As the hot start issue is a common problem, in many cases it can be fixed via the electronic control unit. This hot start fix solution is far more effective and cheaper. That is the reason why so many drivers prefer hot start fix via the ECU.

We, at Effective Tuning, offer one of the best hot start fix ECU remapping solutions. Our hot start fix is a faster, cheaper and more effective tuning solution. We will fix the issue by adjusting the ECU software of your vehicle and creating less fuel injection when hot. Thanks to our professional hot start fix service, your vehicle will start immediately after turning the key and you will forget about the old hot start problems. Check our services here.

Get in touch with Effective Tuning for more information about hot start fix! You can also follow us on Facebook and LinkedIn for the latest news in the chip tuning and ECU remapping field!