What are the effects of a faulty left rear wheel sensor on the car?
3 Answers
Once the wheel speed sensor is indeed damaged, it not only causes a certain deviation in the speed display on the dashboard but also leads to unstable engine idle and reduced acceleration performance. Secondly, when the vehicle starts or decelerates to stop while driving, it is easy to experience a momentary pause phenomenon. Relevant information about the intake pressure sensor is as follows: 1. Introduction: The intake pressure sensor (Manifold-Absolute-Pressure-Sensor), abbreviated as MAP. It connects to the intake manifold via a vacuum tube, sensing the vacuum changes inside the intake manifold as the engine operates at different speeds and loads. These changes are then converted into voltage signals through internal resistance changes in the sensor, which the ECU uses to adjust fuel injection and ignition timing. 2. Working principle: The intake pressure sensor detects the absolute pressure in the intake manifold behind the throttle. Based on the engine speed and load, it detects changes in the absolute pressure within the manifold, converts these into signal voltage, and sends it to the engine control unit (ECU). The ECU then uses this signal voltage to control the basic fuel injection amount.
A broken left rear wheel sensor can have a major impact on the car. From my years of driving experience, this is usually the wheel speed sensor, and if it fails, it can cause the ABS system to malfunction. During emergency braking, the wheels may lock up, significantly increasing the risk of skidding, especially in rainy conditions or when turning. The vehicle stability control also goes out the window—if you're driving in snow, the rear end can easily fishtail and cause an accident. Additionally, the ABS and ESP warning lights on the dashboard will stay on, flashing annoyingly all the time, and may even cause the speedometer to give incorrect readings. If you frequently drive on highways, it can mess up your mileage records. Some cars may also have issues with the tire pressure monitoring system, piling up safety hazards. So, I urge everyone not to ignore the problem—get it checked and replace the sensor at a reputable shop ASAP. It won’t cost much, but safety should always come first!
When the left rear wheel sensor fails, daily driving becomes a headache. I've encountered this issue before—first, the dashboard lights up with various warning indicators like ABS and stability control alerts, flashing like a Christmas tree. Not only is it distracting, but the navigation system might also give inaccurate speed readings. With the anti-lock braking system disabled, braking distances increase in rainy conditions, raising the risk of rear-end collisions, especially in traffic jams. If the sensor shares data with the tire pressure monitoring system, it may falsely report tire pressure issues, wasting time on unnecessary checks. Economically speaking, the sensor itself costs just a few dozen to a little over a hundred yuan, but delaying repairs could damage other circuits, doubling the repair costs. I recommend getting it checked at a professional shop immediately—don’t cut corners and compromise safety. Safe driving is the bottom line.
