Automotive Field Theory explores the forces that shape automotive repair, including the ones measured with a meter or oscilloscope and the ones that cannot be found on a wiring diagram.
Hosted by automotive diagnostic specialist, shop manager, and instructor Matt Fanslow, the podcast begins in the automotive aftermarket but rarely stays inside its traditional boundaries. Diagnostics, electricity, technology, leadership, psychology, economics, game theory, history, music, movies, family, and human behavior may appear unrelated. Look closely enough, however, and connections begin to emerge.
A vehicle may arrive with a technical fault, but the work surrounding it is rarely technical alone.
Information is incomplete.
People make decisions under pressure and uncertainty. Incentives shape behavior. Standards gradually drift. Good intentions produce unexpected results. The official process may say one thing while the system quietly rewards another.
Automotive Field Theory is an attempt to understand those interactions.
Drawing from real diagnostic work, shop management, industry conversations, personal experience, and an occasionally inconvenient level of curiosity, Matt examines not only how things work, but why they work that way, how they became what they are, and what apparently unrelated subjects might teach us about repairing vehicles, leading people, running businesses, and improving the automotive industry.
Some episodes begin with a failed component. Others begin with Metallica, quantum physics, professional wrestling, a historical disaster, a round of golf, or a question that refuses to leave Matt alone.
Eventually, they all enter the same field.
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What happens when a customer decides to take their business elsewhere? Do you make it easy for them to leave, or do you make sure they never want to come back?
In this episode of Automotive Field Theory, Matt Fanslow shares a frustrating experience switching internet service providers at Riverside Automotive. What started as a fairly straightforward decision to upgrade the shop's internet and phone service turned into an unexpected lesson in customer relationships, business strategy, and understanding the game we're actually playing.
Along the way, Matt discusses the challenges of building a reliable shop network, the importance of upload speeds for modern automotive training and communication, and how a properly designed network helped solve years of connectivity problems.
But the bigger question isn't about internet service. It's about what happens when a business takes a customer's decision to leave personally.
How do we respond when a customer decides our repair estimate is too expensive? What happens when they choose another shop? Are we preserving the possibility of a future relationship, or are we so focused on the immediate transaction that we destroy it?
Drawing on game theory and the concept of infinite games, Matt explores why the way we handle these situations can have consequences far beyond a single repair order.
Topics discussed:
Why Riverside Automotive switched from cable internet to fiber
Shop networking, Wi-Fi access points, and the value of reliable infrastructure
How a routine service cancellation became a lesson in poor customer relations
Why customer retention isn't always about discounts or lower prices
Handling customers who choose a competing repair facility
The difference between losing a transaction and losing a relationship
How negative experiences influence word of mouth and future business
Finite versus infinite games and why the distinction matters in business
Why the same principles apply to employees who decide to leave
The bigger takeaway:
Not every customer will stay. Not every estimate will be approved. Not every employee will spend their entire career with your business.
But how you handle those departures can determine whether the relationship remains an opportunity or becomes a permanently closed door.
In an infinite game, the objective isn't to win every transaction. It's to build a business capable of continuing to play.
Connect with Matt:
Have an episode idea or want to join the conversation? Email mattfonslowpodcast@gmail.com.
Automotive Field Theory is part of the Automotive Repair Podcast Network.
Thanks to our Partners, Pico Technology and Autel
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com
What does sexual health have to do with automotive repair? More than you might think.
Margaret Light, licensed marriage and family therapist and certified sex therapist, returns to Automotive Field Theory for a conversation that begins with a simple question about chemical exposure in the workplace and develops into a much broader discussion about sexual health, relationships, misinformation, shame, and communication.
Matt and Margaret explore how little many of us actually understand about our own bodies, how cultural expectations shape our understanding of sex, and how misinformation can create unnecessary conflict within relationships.
They also discuss the relationship between physical and psychological health, differences in sexual desire between partners, the role of shame when our bodies or relationships change, and why sexual health deserves more thoughtful attention from both healthcare professionals and individuals.
As the conversation unfolds, Matt brings his automotive diagnostic perspective to the discussion: Are we addressing underlying problems, or simply treating symptoms? And what happens when we approach complicated human problems with the same assumptions we've always had?
Topics discussed include:
Chemical exposure in automotive repair and potential implications for personal and sexual health
The limitations of traditional sex education and the prevalence of misinformation
Pelvic floor health and the importance of understanding our own anatomy
Finding credible sexual health information and distinguishing evidence from cultural assumptions
Why sexual health concerns often involve both physical and psychological factors
Treating symptoms versus identifying underlying causes
Differences in sexual desire and how couples navigate them
Shame, aging, changing bodies, and expectations within relationships
From Bad Grounds to Bricked Modules: Real-World Diagnostic Lessons [E257]
Recorded live at ASTA 2026 in Raleigh, North Carolina, Matt Fanslow sits down with Tim Iezzi, Ira Waldman, and Chris Farley for a conversation about diagnostic training, module programming, and the realities of fixing cars.
The group shares wrong turns, software headaches, and those uncomfortable moments when a vehicle drove into the bay but suddenly won’t start. They discuss why effective training includes the mistakes along with the successful repair, and why a repeatable diagnostic process matters more than an unusual case study.
From frozen progress bars and constantly changing software to wiring diagrams and working in an icy parking lot, there’s plenty here that technicians will recognize.
Topics discussed
Teaching diagnostic process through real cases, including the steps that went wrong.
No-start diagnosis and getting sidetracked by an assumed immobilizer problem.
Power probes, testing mistakes, and understanding what your test actually proves.
Programming anxiety, patience, and the temptation to interrupt a stalled-looking session.
Changing OEM software, authentication requirements, and the challenge of keeping procedures current.
Software conflicts, dedicated laptops, updates, and backup equipment.
Printing and marking wiring diagrams to make complex circuits easier to follow.
Preparing for mobile diagnostic calls and adapting to conditions outside the shop.
Remote programming, internet latency, and connection reliability.
Thanks to our Partners, Pico Technology and Autel
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence.
Cultivating Mechanical Aptitude in the AI Age [E256]
What if the same technology we blame for weakening mechanical aptitude could help rebuild it?
In this episode of Automotive Field Theory, Matt considers whether YouTube, internet access, and large language models could help address the automotive industry’s skill gap. Younger generations may be less likely to grow up around parents, grandparents, or neighbors who routinely repair cars, appliances, and homes—but they now have immediate access to demonstrations, explanations, and step-by-step guidance.
These tools can certainly become a crutch. Much like GPS can get someone to a destination without teaching them how to read a map, an instructional video or AI-generated procedure can help someone complete a task without necessarily understanding the underlying system.
But that may not be the whole story.
For someone without a mechanically inclined mentor, a YouTube video or AI assistant may provide the encouragement and initial guidance needed to attempt a repair. The result will not always be successful, and professional shops regularly see the aftermath of DIY repairs gone wrong. Still, taking something apart, getting stuck, finding additional information, asking for help, and eventually working through the problem can begin developing real mechanical aptitude.
That raises an interesting possibility: some of the people who eventually enter the automotive profession may trace their interest not to holding a flashlight for a parent or grandparent, but to repairing their own vehicle with help from a screen.
In this episode:
How mechanical aptitude was traditionally developed
Why fewer young people grow up around hands-on repair
The similarity between diagnostic databases, AI, and GPS
The difference between following instructions and understanding a system
Why unsuccessful DIY repairs may still create useful experience
The limits of translating personal repair experience into professional work
Mailbag: Principles and Practices of Oscilloscope Diagnostics [E255]
Oscilloscopes are becoming more powerful, accessible, and common in repair shops—but choosing the right scope is only part of the equation. You also need to understand how your particular scope captures, stores, and displays its data.
Matt Fanslow answers listener questions about automotive oscilloscopes, including the new eight-channel PicoScope, how many channels a shop actually needs, and whether beginners should start with an inexpensive scope or jump directly into a more capable platform.
He also explains the distinctly different way Snap-on scopes handle their sample buffer, and why misunderstanding that behavior can cause a technician to lose the exact event they were trying to capture.
Topics discussed include:
What we currently know about Pico’s new eight-channel automotive scope
How Pico BNC+ powers and automatically identifies compatible probes and transducers
Why current probes, pressure sensors, and microphones are all transducers
Where a single-channel AESwave uScope remains extremely useful
Why two channels are helpful but a four-channel scope should now be considered a shop necessity
When five, six, or eight channels become valuable
Using crankshaft, camshaft, ignition, and other signals together
Why the Snap-on Vantage Pro remains an excellent and affordable starting point
Whether a PicoScope is really too advanced for a first-time scope user
How modern scope hardware can compensate for less-than-perfect setup choices
Why capable modern scopes resemble modern supercars: approachable in ordinary use, with substantial performance available when needed
Why oscilloscopes of this caliber should generally be considered shop equipment
How Snap-on scope screens differ from the displays used by many other scopes
Understanding the Snap-on screen as a window into a continuously moving buffer
Why Snap-on scopes allow technicians to zoom out after a capture—but not zoom in
A prospective hire wants a meaningful increase in income. Riverside Automotive’s base wage would already beat what he currently earns, and the shop’s profit-sharing program could take him beyond his stated goal. Still, he struggles to trust the opportunity.
Is the problem the compensation plan, the way it is being explained, or the uncertainty created by years of disappointing pay systems?
In this episode of Automotive Field Theory, Matt explains how Riverside’s profit-sharing system works and why the percentage assigned to each employee matters far less than the actual dollars produced. Adding another productive person may reduce everyone’s individual percentage while enlarging the total profit pool enough that everyone takes home more money.
Matt also explores:
Why revenue, gross profit, and money left after expenses are not interchangeable
Why a business must retain profit for equipment, facilities, reserves, training, and future needs
How ethical profitability can grow through efficiency, inspections, communication, customer relationships, and reduced expenses
Why charging more does not automatically make a shop unethical
How every employee can influence overall shop profitability
Why individual production incentives may discourage collaboration
How poorly implemented flat-rate systems create lasting distrust
Why a technically good compensation plan can still feel unsafe or unfair
The responsibility leaders have to understand an employee’s previous experiences
Why shared profit can compensate people for helping the entire organization succeed, not merely for their individual billed hours
The central point is simple: percentages do not pay anyone’s bills. Dollars do. A smaller percentage of a substantially larger and healthier business can be worth far more than a larger percentage of a smaller pool.
A high school student considering a career in the skilled trades recently asked Matt for advice about entering the automotive repair profession. Should someone begin with a college or technical program, or find a shop willing to train them?
In this episode, Matt explains why the answer depends partly on the experience a person already brings with them. Many newcomers have had little exposure to tools, machinery, or basic repair work. Knowledge that experienced specialists consider “common sense” is often the product of decades spent fixing bicycles, lawn equipment, cars, and anything else that broke.
Technical education can help build that missing foundation, but even a strong program can only go so far. The workplace must continue the development process. Too many newcomers are placed on the lube rack, buried under oil changes and tires, and expected to somehow develop advanced skills on their own.
A good shop should be able to show a new specialist a realistic development path. That might include supervised work, scheduled opportunities to shadow experienced specialists, progressive responsibility, and exposure to different vehicle systems. The goal does not have to be producing another “master technician.” The profession needs excellent maintenance specialists, chassis specialists, heavy-line specialists, diagnostic specialists, and many other forms of expertise.
Matt also discusses the responsibility on both sides of that relationship. The business must recognize training as an investment and create room for learning. The developing specialist must respect that investment, remain engaged, accept responsibility for mistakes, and learn from them without allowing guilt to become shame.
If the first shop cannot provide opportunities to grow, it may be worth following the path of a chef: work in different environments, learn under different people, and collect a broader range of techniques and experiences. That could mean spending time at a dealership, an independent shop, or facilities specializing in Asian, domestic, or European vehicles.
It’s Never Too Late to Do the Right Thing: Lessons from YouTube, Jelly Roll and Physics [E252]
Episode 252
Wednesday, September 2, 2026 • Duration 29:41
Thanks to our Partners, Pico Technology, and Autel
A monologue from Jelly Roll prompted a simple but powerful idea: It is never too late to do the right thing.
That does not mean “the right thing” is always obvious. People can look at the same situation from different perspectives, reach different conclusions, and each possess part of the truth. The challenge is remembering that the client, employee, employer, or competitor across from us is a human being before they are a problem to solve or a category to assign.
In this episode, Matt considers how quickly automotive professionals can label a client as a “price shopper” when price may simply be the only part of the conversation the client understands. He also discusses clients arriving with information from Google or artificial intelligence, and how shops can use that information to create a better conversation about the time and access genuinely required for diagnostic testing.
The episode then turns toward leadership, accountability, and hindsight. If we recognize that we mishandled a situation yesterday, last year, or many years ago, the passage of time does not prevent us from acknowledging it, apologizing, or trying to make it right.
Finally, a physics thought experiment involving a bouncing ball and two reference frames illustrates how two observers can accurately describe the same event differently. Understanding another person’s perspective does not require agreeing with it, but it may help us judge them less quickly and respond more thoughtfully.
Topics include:
Why clients often default to asking about price
Information asymmetry between repair professionals and vehicle owners
Responding constructively when clients bring in AI-generated information
Why diagnostic testing takes more time than a list of possible causes suggests
The difference between understanding someone and agreeing with them
Reflecting on STX 2026 [E251]
Episode 251
Wednesday, August 26, 2026 • Duration 27:40
Thanks to our Partners, Pico Technology, and Autel
Matt Fanslow returns from WORLDPAC’s STX 2026 with a greater appreciation for everything required to make a major training event happen, especially the hands-on classes. Vehicles, tools, simulators, soldering stations, ventilation systems, safety requirements, instructors, support personnel, and countless late nights all have to come together before an attendee ever walks into the room.
He also challenges a persistent myth about oscilloscopes: that you must become an expert at interpreting tiny waveform anomalies before a scope becomes useful. Most failures are not nearly that subtle. Comparison testing, known-good examples, manufacturer support, training resources, and a little experience can make the scope useful much sooner than many specialists believe.
But the greatest value of an event like STX may extend beyond the classroom. Matt reflects on time spent with Jorge Menchu, Brin Kline, and other longtime friends and colleagues, and on how conferences create professional networks that can become genuine lifelong friendships.
For shop owners and managers, sending team members to training events is more than an educational expense. It is an investment in their skills, perspective, professional network, and connection to the industry. Matt encourages everyone to find a conference they can attend…and challenges shop leaders to help their people get there.
Topics include:
The enormous amount of work behind hands-on automotive training
Recognizing the people working behind the curtain
Teaching introductory PicoScope classes with Scott Shotton
Andrew Sexton’s introduction to key cutting and programming
Kevin Suttorp’s hands-on soldering and EEPROM training
Why oscilloscopes are more approachable than many specialists assume
Using comparison waveforms and known-good examples
Finding technical support and training resources
The professional and personal value of industry conferences
The Ethics of a Diagnosis: Navigating System Pressures and Best Practices with Danielle Fanslow[E250]
Episode 250
Wednesday, August 19, 2026 • Duration 47:08
Thanks to our Partners, Pico Technology, and Autel
For episode 250, Matt is joined by his wife, Danielle Fanslow, MSW, LGSW, LADCS, for a conversation about diagnostics...just not entirely the automotive kind.
Danielle works in behavioral health, mental health, and substance use treatment. Matt diagnoses cars. On the surface, those worlds seem pretty far apart, but both require professionals to gather incomplete information, recognize patterns, separate symptoms from causes, make recommendations, and earn enough trust for someone to act on those recommendations.
The conversation explores what happens when the process isn't as simple as following a flowchart. A trouble code doesn't automatically identify a failed component, just as a behavior or symptom doesn't necessarily reveal the underlying problem. In both fields, experience matters...but experience can also create shortcuts, assumptions, and confirmation bias.
Matt and Danielle compare diagnostic processes, the role of published procedures and best practices, and what happens when professionals deviate from them. They also discuss how a diagnosis can evolve as new information becomes available, why the label itself may matter less than addressing the actual problem, and how trust affects whether a client or customer accepts a professional recommendation.
The discussion also moves into some of the system-level pressures surrounding both industries. Insurance reimbursement, workload, time constraints, business survival, and administrative requirements can all influence professional decisions...sometimes creating situations where doing what is financially rewarded and doing what is actually best for the client are not perfectly aligned.
In this episode:
The similarities between automotive diagnostics and behavioral health assessment
Why symptoms are not necessarily causes
Gathering information before reaching a conclusion
Cultural attitudes toward sexual entitlement and obligation
Ethical non-monogamy, jealousy, and different relationship structures
Redefining intimacy when physical abilities or circumstances change
Developing the communication skills necessary to discuss difficult or uncomfortable subjects
Leading with curiosity instead of assumptions, judgment, or defensiveness
Sexual health isn't separate from our overall health, and relationships don't operate independently of the beliefs, expectations, and experiences we bring into them.
This episode is an opportunity to question some of those assumptions, examine what we think we know, and consider how curiosity, education, and better communication can improve both our individual well-being and our relationships.
Thanks to our Partners, Pico Technology and Autel
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com
How YouTube and AI could provide a new entry point into the trades
Whether technology is eliminating mechanical aptitude—or cultivating it in a different way
Could the technology we thought was contributing to the skill gap ultimately become part of the solution?
Thanks to our Partners, Pico Technology and Autel
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com
Setting the time base correctly when looking for details such as injector pintle movement
How a captured event can disappear from the buffer even though the display appears frozen
When to save a screenshot instead of relying only on the scope-data file
The difference between Snap-on’s Graphing Meter and Lab Scope modes
Common setup mistakes made by Snap-on scope users
The practical limitations of older Snap-on sample rates and memory configurations
How descriptive filenames make saved waveforms far easier to find years later
What vehicle, engine, system, signal, and operating-condition information should accompany a saved waveform?
A scope is only useful when its operator understands what it is doing. Regardless of the brand, spend time learning how your instrument acquires, stores, displays, and saves information before an intermittent failure puts that knowledge to the test.
Thanks to our Partners, Pico Technology and Autel
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com
Matt closes by asking listeners to share how they are currently compensated, what works, what creates problems, and what their ideal compensation system would look like.
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com
The best path into this profession is not necessarily the shortest one. It is the path that gives someone the foundation, support, experience, and opportunity to discover where they can become most capable and valuable.
Topics include:
College and technical-school programs versus learning on the job
The disappearance of early mechanical experience
Why “common sense” is usually learned experience
The limitations of leaving newcomers on the lube rack
What a legitimate development path should look like
Specialization without treating every role as a hierarchy
The shared responsibilities of the shop and the developing specialist
Making mistakes, accepting responsibility, and continuing to grow
Moving between shops to broaden skills and experience
Finding the work you enjoy, the work you perform well, and the work that can support a career
Thanks to the Automotive Repair Podcast Network and to the sponsors of Automotive Field Theory, Autel and Pico Technology.
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com
Remembering the humanity of clients, coworkers, employers, and competitors
Doing the right thing for others and for yourself
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com
Why owners and managers should help their teams attend training events
Learning that other shops often face many of the same problems
Matt also recognizes Keith DeFazio, Isaac and Christina Rudell, Lonnie Horn, Justin Morgan, George Menchu, Bryn Klein, Richard Velko, Andrew Sexton, Kevin Sudor and his wife, and the many WORLDPAC employees, instructors, spouses, vendors, and support personnel whose work made STX 2026 possible.
Thanks to our Partner, Pico Technology
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. PicoAuto.com
Thanks to our Partner, Autel
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Autel.com
Diagnostic procedures versus understanding how the system actually works
Why professional experience can improve a process...and sometimes bias it
Confirmation bias and the danger of deciding what the problem is too early
Communicating not only what you found, but why you believe it
Building trust when the customer or client cannot independently evaluate your diagnosis
Google, YouTube, AI, and the newly "educated" customer
Why transparency becomes especially important when trust is already low
The difference between a diagnosis and the problem someone actually wants solved
How behavioral-health diagnoses can evolve as a clinician learns more
Standardized procedures versus individualized care
Ethical pressure created by insurance reimbursement and business economics
When financial incentives begin influencing what services get recommended
Similar pressures between insurance-driven behavioral health and collision repair
Why good professionals sometimes deviate from prescribed diagnostic procedures
The responsibility that comes with making your own diagnostic strategy
Accepting that even a well-supported diagnosis can occasionally be wrong
Why being able to explain your reasoning matters when that happens
And, appropriately for episode 250...a fair amount of Matt and Danielle giving each other a hard time
About Danielle Fanslow
Danielle Fanslow holds a Master of Social Work and is a Licensed Graduate Social Worker and Licensed Alcohol and Drug Counselor Supervisor in Minnesota. Her experience includes substance use treatment, mental health, assessment, treatment planning, and behavioral-health systems.
Thanks to our Partner, Pico Technology
Are you chasing elusive automotive problems? Pico Technology empowers you to see what's really happening. Their PicoScope oscilloscopes transform your diagnostic capabilities. Visit PicoAuto.com
Thanks to our Partner, Autel
From drivability diagnostics and TPMS service to ADAS and advanced safety systems, Autel helps technicians follow OEM procedures and repair with confidence. Learn more at Autel.com
