Drivability

  • With the proliferation of computer-controlled transmissions over the last three decades, there is no reason a competent drivability diagnostic technician can’t apply his or her skills to transmission diagnosis.
    searchautoparts
  • Starting in 2007, new diesel vehicles from Mercedes and others used Selective Catalytic Reduction technology to meet stringent diesel emissions standards. Read on for a comprehensive overview of effective diagnostic procedures.
    Andrew Libert
  • Don’t fear Asian vehicles! Since many companies already share parts and technology, you will notice that Asian vehicle are not that much different than domestic vehicles. Just like any other vehicle that comes into your shop with a problem, you need a game plan on how you’re going to address the problem.
  • Today’s cars are rolling computer networks and often require software updates to fix a variety of issues.
    Clint Flower
  • Before you can definitively diagnose a trouble code, you MUST understand what it takes to set that code in the first place. Code set parameters are a critical component of accurate diagnostics.
    Jeff Minter
  • New EPA regulations will require new vehicles offered for sale starting in the 2021 MY to use a refrigerant other than R134a. OEMs have also been incentivized to use these alternatives before the phase-out deadline as they can earn emissions credits by making the change early.
    Tracy Martin
  • VCR, or Variable Compression Ratio, engine designs are now in production. Will you be ready to service these systems?
  • Performing a VE calculation on a boosted engine is not much different that doing so on other engines. A known good 2012 Mini Cooper S with a 1.6 liter turbocharged engine will be used to illustrate the technique.
    searchautoparts
  • If you don't know what you should see on a voltmeter — before you hook it up to the circuit — there's no point in taking the meter out of your toolbox   
    Jeff Minter
  • On occasion, what seems to be an obvious fix to a difficult issue, comes back to bite us on the tail.
    Brandon Steckler
  • Most of us are aware of the direct costs of a workplace injury, which are items like hospital stays and surgeries. What many people fail to take into account are the hidden costs, also known as indirect costs.
  • Still on the fence about the practicality of a DSO? From basic system testing to finding that intermittent, the scope could be the most practical tool in your toolbox.
    Eric Zeigler
  • So, what damages the cat? Well, engine misfires can lead to overheating and potential meltdown of the substrate. It can be contaminated by silicone sealants (or liquid spray), coolant leaks into the combustion chamber that coat the strata, excessive oil steam blow, and more
  • A 2013 Audi A4 came in with a complaint of low power along with an illuminated Check Engine light that we were asked to diagnose.
  • During NACE Automechanika 2017 Eric Ziegler in his class, “Essential Diagnostics - The Steps You Need To Take In Tackling Every Drivability and Electrical Concern,” outlined his thoughts on what makes a good diagnostic process – a process that can be applied to any troubleshooting challenge you face.
    Pete Meier
  • This article will describe some of my recent experiences with Asian vehicles, and what I did to diagnosis and repair them. Let’s start out with a 2009 Subaru Forester 2.5 DOHC turbo that came in with a complaint of low power.
  • OBD ports were designed for diagnostics, not continued use with telematics units. What options are currently available in the aftermarket and how could using these potentially cause unanticipated concerns?
    Jeff Minter
  • The basics of fuel trim have not changed. The way it is reported and many of the strategies that are used have changed — and all of these changes have been for the better.
  • Eric Ziegler with The Driveability Guys will be teaching two sessions at the NACE Automechanika training event in Chicago, July 26-29.
    Pete Meier
  • I always try to have a logical approach to diagnostics whenever I am working on something that I have very little firsthand knowledge or experience in working on. I am always harkened back to elementary school science class, when I was first introduced to the Scientific Method.
    Eric Zeigler