Emissions


Are your vehicles exhaust emissions high? or is the lambda reading in correct?

Is your vehicle’s exhaust blowing? does it have running problems? or is the engine management light on? It could be an Oxygen sensor fault or your Catalyst burnt out? Auto Experts Medway Chatham in Medway can carry out a fault diagnosis by carrying out some initial basic checks followed by an engine management fault code read.

It is very important to understand what the retrieved information means before any decisions are made into what is required to repair a vehicle that has a high exhaust emission reading. From our workshops in Chatham in Medway Auto Experts Medway’s technicians are skilled at reading into the information and will advice you on the best course of action.

Importance of Vehicle History:

If your vehicle is new to us our technicians may have to ask you about any history of the vehicle. This may be past faults or simply the service history may have a bearing on any current problem you are experiencing with your vehicle. The answers we are given may affect what decision our technician come to and could affect the final outcome and the cost of repair.

Example 1:

If a vehicle has failed its emissions test and the oxygen sensor reading is low and out of tolerance, then the first thoughts are to simply replace the oxygen sensor.
In reality the oxygen sensor might only be reading low because the engine is being starved of air due to a blocked air filter. If an air filter is not allowing enough air into the engine then the oxygen sensor that is reading the amount of unburnt fuel going through the exhaust, will automatically alter the amount of fuel being injected into the combustion chamber. Because there is not enough fuel being injected then the engine may begin to give a poor performance and in extreme cases may begin to hesitate.

Lambda Sensor:

Modern exhaust systems are monitored via an oxygen sensor or lambda sensor which sends information to the ECU. A lambda sensor is normally screwed into the cat, downpipe or manifold. The ECU collects the information and adjusts the quantity of fuel being injected into the combustion chamber. This helps the system to maintain maximum efficiency.

Example 2:

A faulty blowing exhaust can also affect an emissions reading. To carry out an emissions test the gas analyser probe is inserted into the tailpipe of the vehicle’s exhaust so that it can measure the engine’s exhaust unburnt gases. If your vehicle’s exhaust is blowing and allowing the gases to escape before they get to the rear of the vehicle then a false reading may result in an emissions failure.

Check out our section on other engine management sensors that can affect the efficient running of an engine.

Why Choose Auto Experts Medway?

We at Auto Experts Medway in Medway have established a superb reputation for high quality replacement services, refer to our testimonials from our customers from Chatham, Gillingham and Rochester on our testimonial page.

On many occasions when carrying out a diagnosis a partial strip down is necessary. Should you agree to have any necessary work completed at this time, this initial diagnosis is reduced in price due to the fact that your vehicle has been worked on and may have been partially stripped down already.

So if your vehicle’s exhaust emissions high, its Lambda reading is correct, exhaust blowing, has a general running problem, the Oxygen sensor is faulty, the Cat is burnt out causing the EML to come on? Come to Auto Experts Medway in Chatham we are close to both Gillingham and Rochester in Medway making us the idea garage for shoppers and commuters.

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