Lucas Assimos, an automotive specialist and independent workshop operator based in Florida, provides his top advice for fellow mechanics working with wiring problems.  A circuit can show a healthy-looking voltage on a multimeter and still be incapable of doing its job. That is one of the simplest electrical lessons in the workshop, but it is ...

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European Exhaust and Catalyst (EEC) looks at some of the reasons a DPF might fail to regenerate. DPF regeneration relies on a number of conditions being met, and failure in any one area can prevent the process from taking place. At EEC we regularly see that poor engine maintenance is one of the most common ...

The post Common Faults: DPF regeneration appeared first on Professional Motor Mechanic.

Rotronics CEO Ken Clark offers his expertise on the 12V battery and reminds workshops that they’re just as important on EVs as on ICE vehicles.  Every vehicle on the road today, whether it runs on petrol, diesel or electricity, depends on a 12-volt battery to function. It’s easy to overlook, especially in the EV era, ...

The post Why is 12V maintenance different for EVs? appeared first on Professional Motor Mechanic.

PMM’s wire-chaser Ben Johnson has been at it again recently with a particularly uncommunicative Mazda. There are some diagnostic jobs where the fault practically introduces itself. A warning light comes on, the scan tool gives you a sensible code, you carry out a few tests, find a broken wire, replace the offending part and move ...

The post Why was the Mazda 3 refusing to start? appeared first on Professional Motor Mechanic.

Why was the Peugeot 406 Estate experiencing an electrical fault? Once a vehicle reaches a certain age, every fault presents a new temptation to simply consign it to the scrap yard. But when a vehicle is otherwise working well, the best thing is to find the right solution and give it a new lease of ...

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All workshops have at one point or another been told by a customer, “my air con isn’t blowing cold enough.” Well, that’s a problem this month’s cover star Auto Air Gloucester is seeking to help garages solve. It’s a phrase almost every automotive technician hears on a regular basis: “My air con isn’t blowing cold ...

The post A/C system maintenance appeared first on Professional Motor Mechanic.

The growing presence of new Chinese brands in the UK is creating fresh demands for the aftermarket, requiring tools capable of supporting conventional vehicles, electrified platforms and increasingly complex repair processes. Could Xtool provide the answer?  The arrival of a growing number of Chinese vehicles on the UK market is expanding the range of cars ...

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Julia Blake, marketing director at Supertracker, is encouraging technicians to spot the diagnostic clues hidden in plain sight on tyres. Like a black box recording a flight’s every twist and turn, a car’s tyres also act as a record and not only of twists and turns. Reading that record and acting accordingly is an essential ...

The post What customer’s tyres reveal about their car appeared first on Professional Motor Mechanic.

Mahle guides PMM readers through the various oils available for A/C compressors. Lubricants are fundamental to the reliability and efficiency of modern vehicle systems, yet they are often overlooked during service and repair. Nowhere is this more evident than in air conditioning systems, where compressor oil plays a critical role in protecting components, maintaining performance ...

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ALLDATA is highlighting the importance of reading technical service bulletins as one recent example from Citroën illustrates. Sometimes crucial information is to be found in technical service bulletins and that is definitely the case with certain Citroën models equipped with Euro 6.3 compliant DV engines. For these vehicles, a Stellantis TSB contains vital information that ...

The post Best practice: Citroën timing chain update appeared first on Professional Motor Mechanic.