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This video shows yet again why you should never let the counter person at the Advance Auto, O'Reilly, Napa, Auto Zone or any parts store diagnose your car for you. There are several reason why but number one they are typically wrong and two it ends up costing you more money in the end. Sure they get lucky once in a while but why not just have it diagnosed by an actual mechanic? I dunno, maybe I am crazy...
-Enjoy!
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99 thoughts on “Why you should never get a diagnosis at the parts counter….”
  1. Avataaar/Circle Created with python_avatars Islam Ali says:

    How are you disabling the fuel injector during the diagnostic?

  2. Avataaar/Circle Created with python_avatars edjeep2000 says:

    most people have their check engine light are cheap and want to fix it themselves by throw parts at it, lol

  3. Avataaar/Circle Created with python_avatars edjeep2000 says:

    parts customers are having thier check

  4. Avataaar/Circle Created with python_avatars John Lee says:

    Wish you'd taken us along for the full ride. Miss seeing the bad injector replacement. Always happy to see an SMA video

  5. Avataaar/Circle Created with python_avatars BlackEternity says:

    Thanks Eric.
    Always appreciate the videos. Especially these diagnostic videos are great.
    I am not a car mechanic, nor do I work on my own car. I am one of the great car enthusiasts that brings the car to a shop and says "please fix it".
    Your videos help me massively to understand what they do with my car, understand the stuff that needs to be done and especially WHY the prices are what they are.
    It helped me a ton to describe problems better, give more information to my mechanics in order to drill down on stuff.

  6. Avataaar/Circle Created with python_avatars DoItMyselfGarage says:

    I was fortunate recently that when I was getting a common error code on my 2014 Enclave that I took it in for a proper diagnosis. Turned out to be a broken wire and not one of the other 4 very common causes for this same problem. Definitely could have cost some money with the parts cannon if I didn't get a good diagnosis first.

  7. Avataaar/Circle Created with python_avatars xxBrodieTheDogxx says:

    Eric. Audio issues. Not that you will ever get to this comment but I have to bring up your audio issues. I watch a lot of other channels without any issues at all but yours for some reason is full of them. The audio just drops off and we can no longer hear what you are saying. My best guess is that it has to do with your mic.

  8. Avataaar/Circle Created with python_avatars RSalami says:

    love to know the milage, always. let's us know how long each pile lasts

  9. Avataaar/Circle Created with python_avatars RlfRottn says:

    Hey Eric….noticed the last few videos have to crank up the sound for your vid's . Something change with cameras or editing? No biggie, just curious. Those ad's in the middle about wake up the house if I don't catch! lol

  10. Avataaar/Circle Created with python_avatars Today in the Shop Banksy says:

    There's your problem Lady, you to advanced auto !

  11. Avataaar/Circle Created with python_avatars Matt simms says:

    Great video

  12. Avataaar/Circle Created with python_avatars Joe David Zuniga says:

    Great esplainings

  13. Avataaar/Circle Created with python_avatars michael blacktree says:

    Scanning for codes is the easy part. The real job is figuring out what caused it. A lot of people don't understand that.

  14. Avataaar/Circle Created with python_avatars Eric Scheuerman says:

    Unfortunately way to many shops don't take the time like you do and just load the parts canon. Then the customer is in the exact same boat as when they arrived at the shop only difference is they are around 300 lighter in the wallet.

  15. Avataaar/Circle Created with python_avatars Frank Nemo says:

    I think explaining yourself is sorta the idea on a car fixing vid. Otherwise, it's a guy standing there saying 'This car was broken, so I fixed it. I don't feel I have to explain myself.'

  16. Avataaar/Circle Created with python_avatars sean doofer says:

    Instead of looking at it as resistance whereby current goes down when resistance goes up you, you can look at it as conductance (1/resistance) here current goes up when conductance goes up.

  17. Avataaar/Circle Created with python_avatars MB says:

    I cant lie they got me too…first month of driving I get a check engine light for the 02 sensor voltage not nominal or whatever, cause ended up being a bad catalytic converter but they told me I needed an 02 sensor, sold it to me, and when I asked them to put it on they said we dont do those here lol it was the start of me working on cars myself, and never getting scammed again

  18. Avataaar/Circle Created with python_avatars Gary Glenn says:

    Awesome diagnostic as always it's good to know there are still some honest mechanics out there that have common sense 👍

  19. Avataaar/Circle Created with python_avatars FrugalPrepper's Garage & Garden says:

    I need some good old diagnostic work. It's been a whole lot of rusty crusty brake and suspension work lately. I haven't broke the Pico out in like 3 months!

  20. Avataaar/Circle Created with python_avatars chad dececco says:

    You are awesome 👌 thanks for all the information you have passed on. I love that your videos are educational and entertaining as well. Hi Mrs O!

  21. Avataaar/Circle Created with python_avatars James Peek says:

    Mine is a 02 Silverado 1500hd with all 6.0 that has a lot of misfires and backfires.

  22. Avataaar/Circle Created with python_avatars TM says:

    Always the best videos.

  23. Avataaar/Circle Created with python_avatars John Casor says:

    if i can do it you can do it right ??? Haha.. need a scan tool and classroom time to learn the name of the scan tool. and maybe lots of cars to work on for years just to learn what i am doing right??? i think i will just stick to overhauling gas and diesel engines…

  24. Avataaar/Circle Created with python_avatars Peter Cook says:

    I guess, people think they are beating the system by bringing parts to a shop, because they think the shop marks up parts. I dont markup parts at my shop. I had a customer last year with this thought in mind bring me, a water pump, intake manifold, Demon Carb, and an engine and trans to put in his Monte Carlo. Sadly the engine had a blown head gasket that was discovered after it was put in, but also the intake, water pump, and transmission were wrong for the car. The intake and water pump had to be repurchased, and the driveshaft shortened to work with tranny. Im just doing as Im told. If you are going to lead, be a proper leader and take in even more info. Itll happen again with another customer soon.

  25. Avataaar/Circle Created with python_avatars Dustin Green says:

    Great video!!!!!!

  26. Avataaar/Circle Created with python_avatars Peter Cook says:

    People think the computer is there to tell them what is wrong, its not, its there to suggest what is wrong. Its up to the tech to sort out what it means. Ive seen engines running rough with no DTC in ECM. Obviously the ECM cant tell you everything

  27. Avataaar/Circle Created with python_avatars Jacque Jecker says:

    Yes, when I was a MUCH younger person I did all my own auto repair work, but once I got rid of my '65 ford Galaxie 500, 390 Windsor, (I don't remember what year I replaced it) they were just starting to get into more computerized ignition systems and then started adding all sorts of sensors for emission control etc., I started having the professionals do the few repairs that I needed. There were too many circuits controlling other circuits and I could not afford the tools to diagnose it, plus, I was starting a family about that time. No more time for tinkering. Love your channel.

  28. Avataaar/Circle Created with python_avatars XxSha25ixX says:

    I used to work for Oreillys and do not trust anybody behind the counter. They pay minimum wage, and hire anybody that can walk and talk. Best to just take your car to mechanic you know and trust.

  29. Avataaar/Circle Created with python_avatars Marcus Bland says:

    As an Advance employee…1)I loathe doing 'money light scans'!!!! 2)The customer never understands its not a 100% directory to a certain part. 3)Customers hardly ever understand the 'No refund on installed electrical components'!!! I always tell them to take their vehicle to a 'Qualified Auto Technician ' before making a purchase.

  30. Avataaar/Circle Created with python_avatars Mark Coulter says:

    Nice diag. Smarter than the pats cannon.

  31. Avataaar/Circle Created with python_avatars Matt Bray says:

    From one electrical engineer to another 😉 amazing quick diagnosis as always!

  32. Avataaar/Circle Created with python_avatars James Hedrick says:

    Are you going to do a follow up video showing the repair ? My neighbor is having the same problem

  33. Avataaar/Circle Created with python_avatars Der Wolpertinger says:

    Eric, you are a smart man. Accept it.

  34. Avataaar/Circle Created with python_avatars Heiko van der Laar says:

    You shouldn't get a diagnosis at the pharmacy either.

  35. Avataaar/Circle Created with python_avatars backyardbasher says:

    The Camera pointing at the laptop screen was fine, still great quality.

  36. Avataaar/Circle Created with python_avatars billy says:

    Worked at AZ while in tech school. Laughed at coworkers selling o2 sensors and maf sensors. I would have a line of people asking for me to look at their codes. Usually pointed people in the right direction. I see the benefit for people to have their codes read so that can chuck parts at it. But it is for sure a misleading system. Also when the customer gives up the codes have likly been cleared including the snapshot data and the counts which makes it harder for the tech to diagnose.

  37. Avataaar/Circle Created with python_avatars Avery Wellsand says:

    I like when you explain your reasons because it helps me learn more

  38. Avataaar/Circle Created with python_avatars InsideOfMyOwnMind says:

    If you have the ability to unplug the number one and the number four injectors why couldn't you do a relative DCR test right there? I mean…There's something I must have missed.

  39. Avataaar/Circle Created with python_avatars John Z says:

    Noooooo……..not the freakin scanner again. Mother of mercey

  40. Avataaar/Circle Created with python_avatars nitrous07me says:

    Cya I don’t blame you