Car Mechanics

Car Mechanics December 2018

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Car Mechanics is the UK's only car magazine with essential advice on maintaining and repairing popular makes and models. It’s an invaluable motoring resource that appeals to both the DIY car enthusiast and the more experienced motor trade professional. Car Mechanics has helped save money for our readers every month since 1958. Each issue includes a wide range of in-depth features written in a clear, straightforward manner: • Readers’ motoring-related problems answered for FREE • Real-life motoring dilemmas from our man in the garage trade • Electronic diagnostics delves inside a different modern vehicle each month to explain its management system • Survival Guide looks at new and used component prices for a particular vehicle • Used Car Focus is an in-depth buying guide on a specific make and model • Service Bay covers a full service with close-up images and comprehensive descriptions • Project cars are a major part of the structure of the magazine as we buy, fix and sell different vehicles over a period of months So if you're into saving money and being a home technician, Car Mechanics will help you out - guaranteed!

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United Kingdom
Kelsey Publishing Group
4,16 €(Inkl. MwSt.)

in dieser ausgabe

2 Min.
not so prestige

martyn.knowles@bauermedia.co.uk ▶ Tomorrow my 2004 Audi A8 will be presented for an MOT test after two years off the road. It’s my own fault – with so many cars available for me to drive, problem vehicles can be left untouched for months or even years. With the A8, I was trying to find a low-cost solution to a problem but, as we all know, they can’t always be found. The problem was that one of the four rear light clusters had started to misbehave. If I turned on the exterior lights, the nearside rear brake light would illuminate. Fortunately, the guys at Vasstechnik ( vasstechnik.co.uk ) have extensive VAG knowledge to help with stuff like this. Technician Lee Weafer went through the wiring to and from all the rear lights and concluded…

1 Min.
mil change

▶ In the revised MOT rules that arrived in May 2018, we became aware that any vehicle presented with a permanently illuminated malfunction indicator lamp (MIL) would fail the test and be given a Major marker for this, no matter the age of the vehicle. We’ve since become aware that, from September 13, 2018, the MOT handbook was slightly revised. The DVSA have clarified the changes: “After continually reviewing the standards and feedback following the launch of the new MOT in May 2018, we found the introduction of the MIL check was proving difficult for some testers. Introducing these dates will ensure consistency in the application of the test. “The vehicle types listed below will be tested for MILs: ▶ Petrol vehicles with 4 or more wheels, not more than 8 passenger seats in…

1 Min.

▶ In the November 2018 issue, our 10-page main feature on lighting was illustrated with a graph (see right) described in the text as indicating that an ageing HID burner’s light output had dramatically reduced after 10 years. In fact, we should have said four years’ usage, not 10. ▶ In the same issue, in our Golf GTI project, the caption for Step 6, says: “There are two cam revolutions for one crank revolution, so you could be 180° out.” This should have said “two crank revolutions for one cam revolution.” ▶ In the October 2018 issue, in the Electronic Diagnostics feature about the 2005 Land Rover Discovery 2.7 V6 diesel, we didn’t make it clear that this vehicle was already fitted with an EGR valve by-pass. So the EGR faults shown…

11 Min.
the steering angle

Prior to World War Two, the rudimentary solid front beam axle of early motor vehicles meant that steering and suspension components were kept relatively separate. Especially after the introduction of independent front suspension, as cars became faster and more sophisticated, the steering and suspension became more closely related. Modern motorists should be wary of diagnosing a steering fault, when the suspension, chassis or even tyres could be to blame. While the steering system of even a modern car possesses relatively few components, its design and specification is immensely complex. Engineers go through a painstaking development process to ensure the optimum balance of kingpin, castor, toe and camber angles to achieve a safe, user-friendly system. Although most of these calculations are of little practical use to the everyday motorist, who wishes simply…

1 Min.
power steering fluids

As with engine oil, there are many different PAS hydraulic fluid specifications. Mixing incompatible fluids together can cause serious damage, not least to the system’s rubber seals. While you should heed the specifications given in your car handbook, advice about manufacturer-branded fluid can be unhelpful, especially if it has become obsolete. In general, three types of fluid are available. The most commonly used automatic transmission fluid (ATF) is usually red in colour; several grades are manufactured, but they tend to be compatible with each other. However, double-check with your supplier. Designed specifically to be exposed to higher temperatures and loads than ATF, central hydraulic fluid (CHF) has usually a light yellow hue, although some different colours exist. CHF tends to be used more commonly with electro-hydraulic systems. Finally, liquide hydraulique minéral (LHM) is…

1 Min.
rob’s top tip

Erase any fault codes before replacing an EPS rack or else the correct programming of the new parts could be affected, possibly voiding the warranty. Ensure that you have diagnostic equipment sophisticated enough to recalibrate the steering angle sensor. If working on a car fitted with advanced driver assistance system (ADAS) technology, these will require recalibration after any work has been performed on the steering. When ordering replacement parts, work with the supplier to ensure that you have the correct parts. Many remanufacturers engineer out any inherent faults that were present in the original component.…