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...
Subaru Air Conditioning Theory

Subaru Air Conditioning Theory

How does air conditioning cool the interior of a vehicle on a hot day. Like a lot of things, it all comes down to basic science. That’s why a good understanding of air conditioning theory begins with the Basic Principles of Heat Transfer.

Go to your room – you’re grounded!

Go to your room – you’re grounded!

I’ve always loved troubleshooting ground problems. Well, maybe not always. Certainly not until I figured out the best way to do it. But once I found the method for troubleshooting grounds, I began to enjoy watching the bizarre behavior of ground circuit problems. The more bizarre the problem, the more I liked it, because they […]

Tech Tips April 2000

Honda engine blog, Computer under passenger seat, Power steering fluid flush, Electrical connections, A/C restrictions, Shaft-Key

Into Thin Air Part Two

Into Thin Air Part Two

In the March Import Service, we began a discussion of OBD-II evaporative emissions systems. We explained system operation and the problems engineers face when designing the monitoring devices for these systems. We also looked at the early Toyota evaporative emissions system and explained how the charcoal canister functions. This month we will continue with Toyota […]

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