
The reasons why the Baojun 730 cannot accelerate include the carpet blocking the throttle, electrical modifications, dashboard malfunctions, catalytic converter blockage, etc. Here are the detailed explanations: Carpet blocking the throttle: Check if the installed carpet is blocking the throttle pedal. Poor-quality carpets or those that do not fit the original vehicle dimensions properly may obstruct the throttle pedal, preventing it from being fully depressed, which results in the car not accelerating. Electrical modifications: This can be caused by aftermarket electrical installations, such as strobe lights or xenon lights. These modifications often involve alterations to the vehicle's wiring, and improper handling of the wiring can lead to malfunctions. Dashboard malfunction: Check if any warning lights are illuminated on the dashboard. It is recommended to use a diagnostic computer at a repair shop to compare data streams and identify the faulty component. Issues such as low fuel pressure, air in the fuel line, poor signals from the air flow meter, faulty throttle position sensor signals, damaged ignition coils, delayed ignition timing, or incorrect spark plug gaps can all cause the car to fail to accelerate when the throttle is pressed. Catalytic converter blockage: A blocked catalytic converter may also prevent the car from accelerating. Additionally, if the engine RPM rises normally but the engine noise is unusually loud, the car may be in a neutral state without being in gear, requiring inspection of the transmission.

My 730 also experienced a lack of power during acceleration last year, and after some troubleshooting, it turned out to be a fuel system issue. The fuel pump in the tank can wear out over time, leading to insufficient fuel delivery. A clogged fuel filter can also block the fuel line, preventing proper fuel pressure during acceleration. Last time, I found that the intake pressure sensor was faulty—this component is connected to the throttle body, and if it gets dirty or damaged, it can cause inaccurate air intake measurements for the engine. If the ignition coils are aging or the spark plugs have excessive carbon buildup, incomplete combustion of the air-fuel mixture can also result in poor performance. Remember to check if the dashboard warning light is on—using an OBD scanner to read the trouble codes is the easiest way to diagnose. If the car has difficulty starting when cold, it’s likely time to replace the fuel filter.

It's really annoying when the car can't accelerate properly, especially for a family MPV like the Baojun 730. Common issues include a faulty throttle pedal sensor where the signal doesn't reach the computer when pressed. Carbon buildup in the throttle body can also restrict air intake. Poor fuel quality leading to clogged fuel injectors is quite common, especially when using cheap gas from small stations. Sometimes, a faulty fuel pump control module causes unstable voltage, preventing sufficient fuel supply. Slipping clutch plates in the transmission can also make the engine rev high without delivering power. When I troubleshoot, I start with the basics: first, unplug and reconnect all engine bay electrical connectors to remove oxidation layers, and if that doesn't work, clean the throttle body.

When the car lacks power during acceleration, it's necessary to investigate both the fuel supply and intake systems. On the fuel side, check if the fuel pressure is adequate, as issues with the fuel pump or filter can lead to insufficient fuel supply. Air leaks in the intake pipe or a clogged air filter can affect the air intake volume. Dirty fuel injectors or electrical problems may result in insufficient fuel injection. A severely clogged catalytic converter can also hinder acceleration due to poor exhaust flow. The most common issue is a malfunction in the electronic throttle system causing signal transmission delays. Last time my car felt sluggish when accelerating, it turned out to be the carbon canister purge valve stuck in the open position, causing the air-fuel mixture to be too lean.


