What are the reasons why the car cannot exceed 100 speed?

[LaCharlotte]

It may be due to carbon deposits in the vehicle's engine. Here is the relevant introduction about carbon deposits: 1. The first concept: refers to the carbon deposits in the engine, which are a kind of coking substance produced by the unsaturated olefins and colloids in the fuel under high temperature conditions during the engine's operation. 2. The second concept: refers to the carbon deposits in electrical discharge machining, which should be avoided as much as possible, especially in precision mold processing where it can have a fatal impact. 3. Extension: Performing necessary cleaning on the car's intake system is the most effective method to reduce carbon deposit formation. Therefore, car owners can perform necessary cleaning on the car's intake system at around 30,000 kilometers.

[MacIker]

I just started driving not long ago, and it was really frustrating when my car couldn't go beyond 100 kilometers per hour. At first, I thought it might be due to low tire pressure, but after checking and finding the pressure normal, a friend suggested I look at the fuel pump or spark plugs. If the fuel filter is clogged, fuel can't reach the engine, making it hard to accelerate at high speeds. Or if the ignition system, like old spark plugs, fails to ignite properly, naturally the speed won't increase. A dirty air filter can also restrict air intake, making the car 'struggle to breathe.' There's also the possibility of an electronic control system setting a speed limit, as some cars come with factory-set speed restrictions. Quickly check if any warning lights are on the dashboard. If nothing works, don't attempt to fix it yourself blindly; take it to a 4S shop for a professional check to prevent a small issue from turning into a big problem.

[HazelFitz]

I enjoy tinkering with cars myself. When encountering issues like the car stalling at 100 km/h, I often start by troubleshooting the cause. Opening the hood to check the air filter, if it's clogged with dust, the engine can't get enough air. Testing the spark plugs for wear or carbon buildup, and replacing them if they're faulty. Using an OBD scanner to read fault codes, common issues include fuel system abnormalities like a failing fuel pump causing insufficient fuel supply. Transmission slippage or clutch problems can also lead to power loss. Low tire pressure or uneven wear affects traction and RPM. Misconfigured speed limit settings in the electronic control unit might also trigger this. I've tried cleaning the throttle body and changing the oil, which can improve performance. However, for more complex issues like aging internal components, it's best to seek professional diagnosis at a repair shop to ensure safety.

[KalebAnn]

Safety should always be the top priority when driving on the road. A car that cannot reach 100 km/h is extremely dangerous. If it lacks power during highway overtaking and encounters a truck or obstacle that cannot be avoided, the risk of an accident skyrockets. Possible reasons include insufficient fuel supply, such as a faulty fuel pump or clogged filter. Ignition issues like faulty spark plugs can lead to incomplete combustion. Blocked airflow or abnormal exhaust pipes may also restrict engine performance. Problems with the electronic speed limit system, such as incorrect ECU settings, could be another cause. Forcing the car to accelerate aggressively can damage more components or even lead to loss of control. Pull over immediately to troubleshoot the issue. Seek professional repair as soon as possible—don’t wait until the next trip to address the problem. Ensuring the safety of yourself and your passengers is the most important thing.

[AbigailDella]

As a family that frequently drives, we dread car troubles the most during weekend trips. When the car can't reach 100 km/h, it not only wastes time on the highway but also poses safety risks. Recently, the issue was traced back to a weak fuel pump, failing to deliver enough fuel for acceleration. Alternatively, a dirty air filter might clog the intake, making the engine struggle. Faulty ignition coils or spark plugs can also cause misfires. Occasionally, the electronic control system might mistakenly activate a speed limiter—check the manual to adjust it. Before heading out, ensure tire pressure is normal and the engine oil is fresh to prevent issues. If the car stalls midway, avoid forcing it; instead, find a repair shop for a proper diagnosis. Sometimes, replacing a small part can quickly get you back on the road, allowing your journey to continue worry-free.