Why can't the Chery Tiggo 5 accelerate when driving?

[VanAlan]

There are several reasons why the Chery Tiggo 5 cannot accelerate when driving: Idle switch not closing: If the engine speed does not increase when the air conditioner is turned on or the steering wheel is turned at idle, it can be confirmed as this fault. Adjust, repair, or replace the throttle position sensor. Idle control valve (ISC) failure: Check the operating sound of the idle control valve. If there is no operating sound, the idle control valve is faulty. Clean or replace the idle control valve, and use a special decoder to perform a basic setting of the idle speed. Intake pipe leakage: If a hissing sound is heard from the intake pipe, it indicates a leak in the intake system. Locate the leak, reseal, or replace the relevant components.

[KathrynDella]

I encountered the same issue with my Tiggo 5 a couple of days ago. While driving, suddenly pressing the accelerator had no response, and the tachometer wouldn't go up. I figured it might be due to severe carbon buildup in the throttle body, especially since the car is over five years old and has never been cleaned. The mechanic said dirt could be blocking the air intake, causing the ECU to limit throttle response. Another possibility is a malfunctioning fuel pump leading to insufficient fuel supply. He advised getting the fault codes read at a shop immediately and not tinkering with it myself. If the fuel pump really fails, breaking down midway would be dangerous. After cleaning the throttle body in my case, the accelerator became responsive again, but if the fuel injectors are clogged, parts might need replacement. Maintaining older vehicles really requires careful attention.

[DelAdalynn]

My colleague's Tiggo 5 had an issue with lack of power when accelerating last week. The mechanic said it's a common problem. First, check the air filter box—leaves or bugs might be blocking the intake, making it hard to breathe even with the pedal to the floor. Poor fuel quality can cause carbon buildup in the fuel injectors, leading to insufficient fuel supply and sluggish acceleration. The key is to inspect the electronic throttle pedal; if the position sensor is faulty, it sends erratic signals to the ECU. Personally, I recommend avoiding small gas stations and cleaning the fuel system every 20,000 km. If you suddenly lose power while climbing a hill, pull over immediately to check—delaying could seriously damage the engine, and that’d be a huge loss.

[DeOmar]

The power delivery issue in the Tiggo 5 is mostly caused by fuel system malfunction. It could be a clogged fuel filter preventing the fuel pump from drawing gasoline. Alternatively, worn-out spark plugs causing poor ignition may struggle to maintain engine speed. Remember to check the brake light switch - poor contact can make the ECU think the brake is engaged, automatically limiting throttle response. As a veteran car owner, I recommend not delaying - the most accurate diagnosis comes from plugging in an OBD scanner to read trouble codes. Minor issues like replacing a sensor cost just a few hundred yuan, but a clogged catalytic converter would be far more troublesome.