Don't ya just love it when you replace the instrument cluster in a vehicle and now it wont run!? What the heck!? Well the two problems are not related but let's have a look into this and learn a bit about voltage drop! Hopefully....
Interested in stuff seen in the videos or the tools and toys Eric O. likes and uses? Check out the **ALL NEW** SMA A-Store and help support the channel! :
If an SMA Video has helped you out please consider giving using the "support" link on our YouTube home page. The videos take real time to create and pull us away from real work that pays our bills.
--Eric O.
Simply send and E-mail to SMAstickers including: your shipping address and e-mail address in the text, I in turn will send you a paypal invoice for $5 each USA or $6 each international. Let me know how many you want and as soon as the paypal invoice is paid I will ship them out ASAP! Thanks for your support of our channel!!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.

49 thoughts on “Ford f-550 6.0 – no start no crank”
  1. Avataaar/Circle Created with python_avatars Danny Linc says:

    This is a good method because of access time required to those connections of the frame and block.
    Thank the maker, it was the easier side.
    So what caused the brown grodies in the cable? It looks like a clean rig, but Eric O says it's rusty underneath from being in the northeast.
    I was going to say what EricO predicted.
    An ohm check that's reading greater than point 5 ohms is out of spec.
    Our reading was 69,000 ohms.
    That would be bad.
    So from the disconnected cable clamp at the post, to the ends , respectively, each should be less than point 5.
    It's a P.O.S. corroded or incorrectly made cable.
    (Now that we know)
    What happens at a Ford dealer, is you do all this and the warranty clerk takes all but about a half hour.
    You only get paid the half hour.
    And that's after the new part is on there.
    So, my take on this would be to have my suspect circuit, disconnect, and ohm check it.
    If the values were inconclusive, use the jump box grandma trick, or a pair of jumper cables connected to a charged battery.
    Charge each of the vehicles batteries, run charging system tests.
    And write all the values down.
    Hope for a miracle that the electrical testing procedure time and the cable access time, can. be added to the replacement of one cable.
    Tough luck when you get an additional point three added to your point 5 you could count on.
    If you had management sign off on the perplexing situation?
    That could be your saving grace for all you did Eric O, to be the electrical swammy you are.
    And your grandma is a phart smeller too.
    Hope you get paid.
    Nice diagnosis and presentation.
    I learned more than I thought I would, and stayed with it to the victory!
    Hooray! For Eric O.
    If the customer was paying us to tell me him why his electrical issue existed we would ask for an hour to get as far into it as was needed.
    Then we would price new cables and look up the Chilton guide labor time.
    He might buy one r all of them based on a conversation with our findings so far to base a decision on, and the gut feeling of management, or their request to pull cables and check.
    We would be told to pull that one that was suspect first and bench check it in my experience, sometimes you need luck to make a buck. It in this kind of problem, you break even.

  2. Avataaar/Circle Created with python_avatars Bill Chmelik says:

    No it doesn't charge both…aske how I know…lol
    Primary battery is the passenger side

  3. Avataaar/Circle Created with python_avatars David Patrick says:

    This is interesting…. how the left batt didn't drop volts at crank or koef … but a thought… could one take heavy jumper cables and jump the batteries and see what that does?

  4. Avataaar/Circle Created with python_avatars Bill Elliott says:

    Any advantage on a 24 volt starter circuit ?

  5. Avataaar/Circle Created with python_avatars darkwing4 says:

    Enjoyed your class today in Rust-Belt diagnostics,, My rig here in CA is 25 years old,, (110,000 mi) ,, has never seen the inside of a garage,,, and there is'nt any rust,, anywhere,,, 🙂

  6. Avataaar/Circle Created with python_avatars redneck rules says:

    I would have immediately guessed for the ipr or hpop

  7. Avataaar/Circle Created with python_avatars Wog says:

    Just wented to say just started watching your videos an had this problem nothing like helping people out without lying to make money thanks u appreciate you and your videos brother they sure do help people wish they had more people like u in the world thanks brother man !!!!.

  8. Avataaar/Circle Created with python_avatars Raymond Martin says:

    I like the troubleshooting videos

  9. Avataaar/Circle Created with python_avatars Bob Burro says:

    Scotty had the marker!

  10. Avataaar/Circle Created with python_avatars Richard Haag says:

    Scotty Kilmer would be proud

  11. Avataaar/Circle Created with python_avatars Dave Palacios says:

    Awesome video,,!! I know some wouldn’t have the patience to see it through and want to cut to the chase, but what an education in trouble shooting! Definitely helpfully in diagnosing more complex issues. I for one am glad you take the time to be comprehensive. Please keep it up.

  12. Avataaar/Circle Created with python_avatars mario sciore says:

    Great video love trouble shooting

  13. Avataaar/Circle Created with python_avatars fishin11 says:

    Don’t know if this helps, if I’m wrong, or blowing up a tree. I’m a marine tech, (I have literally called two battery manufacturers for this info). When 2 batteries (in a boat) are connected together, #1 is, let’s say at 8 volts and #2 is good at let’s say 12.7-8 volts. When you connect a charger to #1 because it’s low, because the batteries are connected the charger will not throw/charge #1 because with both batteries connected, the charger is reading the 12.7 volt, so it’s saying this battery is good, it doesn’t need charging. Ive learned this over the years but no one would believe me, so I called and was told this by the manufacturer also. The charger doesn’t know if 1 or 5 batteries are connected, it’s only reading voltage and will put out amps to charge. Now, here is another example. This happens a couple times a years with us. Customer knew he had 1 battery that was about 3-4 volts, and the other battery was about 8 volts. He puts a charger on them, (still connected) the 8 volt battery goes to 12.6 and the 3 volt battery goes too about 8, why? (As told by manufacturer)the charger only threw power, it did not know there was 2 batteries, it just reads that it has to charge, so the better battery goes up too 12.6, charger says, ‘that’s good’ so weaker battery never gets charged up. You have to separate them. This goes for the alternator also. This is why in a boat, you need a battery isolator that will since when one battery is low, the alternator will charge just that one. If both low, sends power to both, when one gets charged, it continues charging the other.

  14. Avataaar/Circle Created with python_avatars Lawrence Anderson says:

    Gee Eric, your getting like me. Misplace things in minutes. I am always looking for something I had just minutes before. Unfortunately, I always know where my wife is. shucks

  15. Avataaar/Circle Created with python_avatars Lawrence Anderson says:

    I would think that if you had batteries hooked up in parallel, if one had 12.9 volts and the other had 12 volts, then you would get 12.5 on both instead of one being higher.

  16. Avataaar/Circle Created with python_avatars N Kel says:

    10 minutes of wasted time, video where this guy color codes and use tiny figures. I'd say —-''''''you got this whole white board …use it''''. So I wasted time . thanks for being rookie YT host

  17. Avataaar/Circle Created with python_avatars Andrew Lowry says:

    Great video

  18. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    Nice find Eric O the 1v Loss Being on the Ground Circuit definition a Ground broken or bad connection Between the Frame @SouthMainAutoRepairLLC

  19. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    There's your problem lady 1 battery doing all the work the other battery isn't connected or No current flow the parallel battery Circuit isn't Connected Eric O @SouthMainAutoRepairLLC

  20. Avataaar/Circle Created with python_avatars Gary Ringham says:

    I have a 05 6.0 power stroke I parked int in shop at work and went to go home crank no start I check fuel psi and icp pressure and ficm volts and it only had 27volt out of ficm so I repaired it know has 48.5 it will only start if I spray ether and it will run all day as soon as u shut it off no start any thing anybody can help with would be appreciated

  21. Avataaar/Circle Created with python_avatars 14andtro says:

    Perfect From Norway Trond

  22. Avataaar/Circle Created with python_avatars roy moyer says:

    ghost resistance……great video, maybe you should leave board markers all over the shop, yer gettin old

  23. Avataaar/Circle Created with python_avatars gunga din says:

    A perfect descriptive course in high current DC fault analyisis. The guy is smart

  24. Avataaar/Circle Created with python_avatars Monte Hyler says:

    Great video! I really like how you worked thru this problem.

  25. Avataaar/Circle Created with python_avatars Mark White says:

    The sharpies moving around is just the Mandela effect 😉

  26. Avataaar/Circle Created with python_avatars Chris Micallef says:

    Treat him right the first time…you'll see that 6.0 again! 🙂

  27. Avataaar/Circle Created with python_avatars Robin De Penning says:

    I appreciate your method. I totally respect your efforts to 100% confirm before jumping ahead to your best guess. When you were pretty sure the passenger side ground was the issue, I was like " OK clean and check those grounds on the passenger side" …but we still didn't know which wire or connection point was bad. Thank you for being thorough. I have learned a lot from you.

  28. Avataaar/Circle Created with python_avatars Roger Laurel says:

    While this is 6 years old, I can only hope your diagrams, dialogue have improved, preparation with knowing where your white board markers are located & you ditched Scotty!

  29. Avataaar/Circle Created with python_avatars adudecalledjay says:

    Interesting, early on in the video I was guessing that there was a diode between the two batteries which would limit the electron flow to one direction. In this pattern you'd have all auxiliary power coming off of one battery and the other battery is reserved for functions like starting. A diode here may cause different voltages if it was from the direction of the starter battery to the aux battery which was consistent with your voltage differences and the readings when attempting to crank. In this case the solution would have just been to reverse the diode as someone likely accidentally installed it in the wrong direction when installing the new battery. I guess it's another scenario to consider if others watch this video and see similar symptoms 🙂

  30. Avataaar/Circle Created with python_avatars Passage Creek Bees says:

    7.3 engins sound way better.Too bad they stopped using them.

  31. Avataaar/Circle Created with python_avatars Naif ALTAMIMI says:

    definitely a channel worth subscribing, almost 'liking' all submitted videos. thank you.

  32. Avataaar/Circle Created with python_avatars Lee Carroll says:

    You are the man. Great job.

  33. Avataaar/Circle Created with python_avatars Lee Carroll says:

    We poke fun at Scotty but I agree with his pro Toyota stance. For ever 12-15-20
    vehicles in shop, only about 1 Toyota. I live in Spain and a Hilux diesel is my choice, Im
    72 and a used one will last the rest of my life. They don't break a lot and proof of this was oil fields in Kuwait, Isuzu
    D Max was just as good. Abdulla doesn't like to spend money.

  34. Avataaar/Circle Created with python_avatars Alexander Stefanxandra Swedish says:

    Great job

  35. Avataaar/Circle Created with python_avatars Craig White says:

    One battery is for starting and the other is for accessories!

  36. Avataaar/Circle Created with python_avatars Bill Smith says:

    It's not so much that you're that blind. It's that you're that old. I think mama needs to start looking for an upgrade 🤔🥺🤭

  37. Avataaar/Circle Created with python_avatars Bill Smith says:

    Secret to a simple way to attach a lead to a flat metal surface. Magnet on a metal stick 🤔🥺

  38. Avataaar/Circle Created with python_avatars Bill Smith says:

    So I'm watching this video and you're kidding right. You have no continuity between the two batteries. You draw a picture on the board. There's only one connection between the two batteries that is common. So instead of going directly to that common connection and checking continuity. You go through all this checking load checking this checking that! you're just doing that for educational purposes right? You're not really serious about not seeing the elephant standing on your foot are you? Are you just waiting for it to take a poo on your shelf? Maybe it's just the burrito talking. All that work and all you had to do was check the continuity of the positive cable between the two batteries with a ohm meter. If they're good then through logical deduction is only one other possible problem of continuity. 30 seconds go to the negative part of the circuit. You got to get tired doing all that excessive analytic exercises. Just wake up and kiss (Keep It Simple Stupid) the problem and be on your way

  39. Avataaar/Circle Created with python_avatars Bill Smith says:

    Saying the green part of those burritos was not peppers or sauce?🤔🥴🤢🥵🤮😵🥶

  40. Avataaar/Circle Created with python_avatars bo trys says:

    continuity checks are a good start

  41. Avataaar/Circle Created with python_avatars Robert Smith says:

    Thank you! As always great video, I learn something every time. RHS Mobile Auto Repair LLC 1988-Present. Rustbelt Master Mechanic.