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What are the effects of a faulty exhaust gas recirculation valve on a car?

1 Answers

VanSabrina

07/30/25 6:39am

Faulty exhaust gas recirculation valves can lead to unstable idling, poor acceleration, increased fuel consumption, insufficient power, and other malfunctions. Introduction to exhaust gas recirculation: Exhaust gas recirculation is a technique (or method) used in small internal combustion engines for automobiles, where a portion of the exhaust gas is recirculated and reintroduced into the intake side to be burned again. The primary purpose is to reduce nitrogen oxides (NO-x) in the exhaust gas and improve fuel economy under partial load conditions. It is commonly referred to as "EGR" by taking the initials of each English word. Types of EGR systems: Mechanically controlled EGR system, electronically controlled EGR system, directly controlled EGR system, indirectly controlled EGR system, single-valve controlled EGR system, multi-valve controlled EGR system, open-loop controlled EGR system, closed-loop controlled EGR system.

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How to use the cruise control on Volvo XC60?

Volvo XC60 cruise control usage is as follows: 1. Activate the system: Accelerate to above 40km/h, press the SET button, then you can release the accelerator pedal with your right foot, and the speed will be set at the current speed. Press "RES+" to increase speed at the current speed, and press "SET-" to decrease speed at the current speed. After setting the cruise speed, you can still accelerate using the accelerator pedal as usual. When you release the accelerator pedal, the system will restore the speed to the set cruise speed. 2. Cruise control system: The cruise control system, abbreviated as CCS, is also known as the cruise control device, speed control system, or autonomous driving system. Once activated, it maintains the speed set by the driver without the need to press the accelerator pedal, allowing the vehicle to travel at a fixed speed. Additionally, you can adjust the speed, pause, or cancel the function by using the control switches.

What does the SS slash mean in a car?

SS lamp is the automatic start-stop warning symbol, and the slash indicates that the function is currently unavailable. This is a self-protection mechanism of the automatic start-stop function to prevent the system from activating repeatedly during frequent short-term stops, thereby protecting the ignition system from damage caused by repeated and frequent ignition. Below are specific details about the car's automatic start-stop function: 1. Automatic start-stop button: The automatic start-stop button is located to the left of the cigarette lighter, and pressing it once will deactivate the automatic start-stop. 2. Default activation: The automatic start-stop function is enabled by default. Each time the vehicle is restarted, the automatic start-stop will be activated. This button cannot permanently disable the function; it must be pressed each time the vehicle is started to deactivate the automatic start-stop.

What are the symptoms of a faulty ignition wire?

Symptoms of a damaged ignition wire are as follows: 1. Insufficient power: The car lacks strength when going uphill, and the engine noise is noticeably louder. 2. Jerky acceleration: Occasionally feels a jerk when accelerating above 80 km/h, with occasional jerks at speeds around 80 and between 100-120 km/h, resulting in an unsteady acceleration. 3. Increased fuel consumption: Noticeably higher fuel usage, with black soot at the exhaust pipe outlet. This can cause mild or severe gear shifting issues. Sometimes the car fails to start and requires a bit of throttle to start. Note: When the car reaches a certain mileage, spark plugs will develop carbon deposits, and the electrode gap will increase. Carbon deposits will increase engine fuel consumption, and an increased spark plug gap can cause difficulty in starting.

Is it serious when the engine yellow light is on without ignition?

Engine yellow light is a relatively serious warning, which reminds the driver that there is a problem with the engine-related components of the car. It should be repaired in time at the nearby car repair station, and the yellow light can only be eliminated after the failure of the engine-related components is eliminated. The following are common engine failures: 1. Starter damage: including insufficient battery power, circuit fuse damage, starter line open circuit, etc., resulting in engine ignition failure. 2. Unstable speed during operation: the engine speed is unstable during operation, and the amplitude of up and down jitter is large, because there is gas leakage in the intake system. 3. Slow speed change during rapid acceleration: when the car accelerates rapidly, the engine speed changes slowly, because the ignition voltage is too low, the ignition time is delayed, etc.

What gauge wire is needed for charging the Wuling Mini?

Wuling Mini requires a 4-gauge wire for charging. Below is the relevant information: 1. Household power supply: As a four-seater new energy vehicle, the Wuling Hongguang MINIEV can be directly charged using a standard 220V three-pin household power outlet with grounding, with a charging power of less than 2kW. The Hongguang MINIEV does not rely on charging stations and comes equipped with an integrated high-efficiency charging cable. The 120KM range model takes about 6 hours to charge, while the 170KM range model takes approximately 9 hours, making it very convenient. 2. Battery introduction: The Hongguang MINIEV battery features low-temperature pre-heating charging technology, battery insulation function, and an intelligent battery management system (BMS), which allows real-time monitoring of the battery status for convenient charging and power monitoring.

What to Do If Your Parked Car Gets Scratched on the Roadside?

Check if there are any surveillance cameras nearby. Nowadays, many places have surveillance systems, and you can identify the offending vehicle through the footage. Once you have the license plate number, you can report it to the police to locate the responsible party. Relevant handling suggestions: 1. Report to the police: File a report to find the perpetrator through surveillance and apply for compensation. 2. File an insurance claim: If the car was parked legally on the roadside and got scratched, you can directly file a claim with your own insurance company. If the offending vehicle is not found, the insurance company usually has a 10-30% deductible rate, meaning they will cover 70% of the repair costs, leaving the remaining 30% to be borne by the car owner. 3. Repair it yourself: For minor scratches, you can opt for repainting, which typically costs a few hundred yuan.

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