TechASSIST: Diagnosing Lambda Sensor Issues

Lambda Sensor Fault Diagnosis

Lambda sensors were first fitted to cars in 1977 to improve the efficiency of combustion engines and help to reduce harmful exhaust emissions such as carbon monoxide.

Lambda sensors operate by measuring the amount of oxygen in the exhaust. An efficient engine requires a specific amount of air and fuel in it’s cylinders at combustion. The perfect ratio being 14.7:1 (14.7 parts air to 1 part fuel). This perfect mixture is called Lambda and this is where the unusual name originates. However, they are often also called oxygen sensors or O2 sensors due to their fundamental role of measuring oxygen. The levels calculated by the Lambda are sent as data to the ECU which then calculates and determines how best to achieve the ideal mixture of air and fuel at combustion.

An incorrect air/fuel mixture will be either rich or lean:

• In a rich mixture the air is high in unburned fuel, though low in oxygen.
• A lean mixture has the opposite balance and is high in oxygen due to not enough fuel being injected.

Many vehicles now feature a pre-cat Lambda Sensor and a post-cat Lambda Sensor. Whilst the pre-cat Lambda Sensor communicates to the ECU regulating the air/fuel ratio; the post-cat Lambda Sensor performs a diagnostic role, monitoring the Catalytic Converter.

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TechASSIST: Window Lift Regulators

ELTA Window Lift Regulator

Demand Continues to Rise

Aftermarket demand for window regulators continues to grow year-on-year because, as well as now being a generally standard feature, the trend for larger windows in modern automotive design puts them under increased stress. Here we look at the causes of failure, effective fault diagnosis and key considerations when replacing window lift regulators.

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TechASSIST: Brake Disc Shields

ELTA TECHASSIST BRAKE DISC SHIELDS

Although seen on a daily basis, brake shields, otherwise referred to as dust covers, back plates or splash panels, are largely considered an irrelevance and generally ignored by technicians, as they undertake their regular service and repair responsibilities. Perhaps the only exception is when they are sometimes removed on the misconception that without them brake cooling can be improved or benefit the vehicle’s aesthetics.

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TechASSIST: Wiper Blade Troubleshooting Guide

Wiper Blade Troubleshooting Guide

Diagnosing Wiper Blade Issues

Wiper blades may not be something that we rely upon every day (especially through the summer months) but when we do need them, we need them to perform. Your wipers are all that stand between the assault on your windscreen and your driving vision, making them a critical safety component. However, the performance of your blades hangs in a delicate balance. The soft, supple rubber that sweeps away water so effortlessly is not so great at battling other environmental factors. Faced with an onslaught of road tar, tree sap, cleaning chemicals, insects, oils from exhaust gasses and damaging UV rays, wiper blades can quickly deteriorate and that simple, easy-going component becomes the bane of your driving experience. Streaking, chattering, smearing and noise are all common and whilst replacing the old blades can often cure all of these complaints, it is not always the answer. Garages and motor factors frequently report new blade customers returning and reporting the same issues. ELTA believes that in these cases, the root causes of the symptoms have been missed. Here we look at some of the most common wiper blade complaints and identify possible causes and recommended solutions and additional checks to ensure that higher levels of customer satisfaction are achieved.

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TechASSIST: Fuel Vaporizers

Fuel Vaporizer DPF Light Issues

So what are Fuel Vaporizers?

The Fuel Vaporizer is a relatively new component designed to improve the DPF regeneration process and further reduce harmful emissions.

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TechASSIST: Brake Pad Wear Sensors

Brake Pad Wear Sensor Warning Light

The brake pad wear sensor is a simple component that plays a critical role in vehicle safety. In this bulletin we look at the brake pad wear sensor in depth.

There is a multitude of factors that affect how quickly brake pads wear. Varying driving conditions, speeds and pad compounds make it difficult to predict the lifespan of the brake pad. What we do know,is that below a certain level of wear, the effectiveness of the brake pad reduces significantly. The challenge faced by vehicle manufacturers is how to alert the driver once brake pads reach this point.

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TechASSIST: Fuel Delivery Modules / Fuel Feed Units

Fuel Delivery Modules and Feed Units

What is a Fuel Delivery Module

The fuel delivery module is essentially a combined in tank fuel pump and level sensor. The unit contains a motorised pump, pump controller and fuel level sensor. In this bulletin we'll look at what can go wrong, how to spot faults and offer advice on replacing components.

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HID Guide

TechASSIST: Complete Guide to Xenon HID Headlamps

A Complete Guide to Stocking, Selling, Identifying and Fitting Xenon HID Lamps

Sales of Xenon HID Lamps throughout the aftermarket are certainly on the rise. Although Xenon Lamp lifespans are much larger than halogen bulbs, they do eventually fail and many vehicles are now requiring replacements. Here we look at some of the key facts and misconceptions surrounding this lighting technology to help your business to benefit from the significant rise in demand.

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Update Your MAM AutoCat Preferences

update MAMA AutoCat Preferences

Are you seeing the complete ELTA offering?

ELTA Automotive deliver one of the most comprehensive product portfolios in the automotive aftermarket and it's growing every day. Whether you're an ELTA, Xevo, QLUX or Lucas customer we highly recommend setting ELTA as a chosen supplier in your MAM AutoCat preferences. Our ELTA VXPRO and VisionPRO ranges offer every product available from ELTA Automotive so you'll see a wider range of products from a one supplier. In this quick guide we'll show you how to update your AutoCat supplier preferences so that you can take advantage of our huge range and sensible prices.

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