Why does the Lavida's engine speed increase when braking at idle?
1 Answers
It could be due to the transmission downshifting, causing a momentary increase in torque, which should be a normal phenomenon. It is recommended to visit a 4S shop for inspection or compare with the same model. Normal phenomenon: When driving at a constant speed on flat ground, pressing the brake causes the engine speed to rise to 1500 rpm and then drop to 1100 rpm, maintaining at 1100 rpm when stopped: this is because the increase in speed leads to an upshift, and pressing the brake causes the speed to drop, leading to an automatic downshift, which increases the engine speed. This situation is quite normal. ECU receives deceleration signal during braking: When the vehicle is braking, the ECU receives a deceleration signal and will automatically downshift according to the speed to provide additional engine braking. Most engines have a minimum fuel cutoff speed around 1100 rpm, so before the current gear's speed drops below 1100 rpm, the transmission will downshift in advance to prevent stalling.