Publications

di-AGNOSTIC Volvos: an Agnostic Viewpoint to Gather Diagnostic Information

Approaching automotive diagnostics from an agnostic viewpoint allows a technician to gather evidence without bias toward a specific answer. The word agnostic is usually reserved for discussions of religion and the hereafter, but it has a broader meaning of not knowing...

Identity Verification for Mercedes-Benz XENTRY Diagnosis, Programming and Theft Relevant Parts

There have been big changes in the processes; here’s what you need to know! ...we will discuss the TRP policy and procedures, followed by what is likely somewhat new to you, the account verification system. As the title suggests, there are two separate processes for...

Replacing the Air Conditioning Evaporator in the 2006 Volvo V70

This is not an easy job but it can be rewarding for both the technician and the customer. Replacing the air conditioning evaporator on a 2006 Volvo V70 is a huge job, needless to say. The complete dash and heater box will need to be removed from the vehicle. You have...

Addressing Some Common Codes and Complaints With the Mercedes-Benz M274 Turbocharger Engine

There was a time when superchargers and turbochargers were pretty much limited to race cars and certain high performance applications. Now, with the newer technology and the global drive for fuel efficiency and more power, turbochargers seem to be found on almost...
Grind and Squeal, Growl, Moan and Groan! Them’s the Brakes!

Grind and Squeal, Growl, Moan and Groan! Them’s the Brakes!

On Germany’s unlimited-speed Autobahns and the similar limited-access highways in Austria, Switzerland and Northern Italy, you’ll see (and hear) cars decelerating rapidly from over 150 mph. As those cars bind it down to zero from three-figure Autobahn cruise, there’s sometimes a long, loud brake squeal, a noise the drivers usually ignore.

Circuit Savvy Part Two: Parallel Circuit Resistance

Circuit Savvy Part Two: Parallel Circuit Resistance

Voltage and current in series and parallel circuits are relatively easy to understand because we can use descriptions that are clear and logical. For example, in a series circuit, all components in series pass the same total current (I) and the sum of the voltage drops around a series circuit equal the total applied voltage […]

Volkswagen Motronic

Volkswagen Motronic

Motronic systems combine ignition timing with knock control, fuel injection, fuel economy and emissions control. Combining all these functions into a single control unit allows adaptive strategies to control idle speed, ignition timing and fuel injection, depending upon actual operating conditions.

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