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In today's Quick Tip Tuesday I use the AES Wave U-Scope along with an amp clamp to help verify that a blower motor on was indeed failing. This is a great way make a call on an intermittent blower motor, fuel pump, or even a cooling fan motor. -Enjoy!
PART II: https://youtu.be/tKBpbqsD0XQ
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45 thoughts on “Diagnosing an intermittent blower motor part i”
  1. Avataaar/Circle Created with python_avatars Carl ODonnell says:

    Hi The best sales pitch is an unintended sales pitch ha!

  2. Avataaar/Circle Created with python_avatars Jerry George, M. Div says:

    Thank you so much. The blower on my 99 Ford Ranger works well for two or three days and then nothing. I tried it the other morning and nothing. Later in the day, I ran over a pothole and it started up strong. The next day nothing.

  3. Avataaar/Circle Created with python_avatars Dr Martin D'Costa says:

    So a new blower the best solution?

  4. Avataaar/Circle Created with python_avatars mgottsch says:

    What preset so you have it set too?

  5. Avataaar/Circle Created with python_avatars R. Salinas says:

    Thanks

  6. Avataaar/Circle Created with python_avatars Kent Hand says:

    I have a 2016 Jeep Cherokee and sometimes the fan will go from blowing full to barely any air through the vents and it's not in auto mode. This seems to be a common problem in the Cherokee from owners forums, would an open spot in the motor be my issue too?

  7. Avataaar/Circle Created with python_avatars Jim Sinovich says:

    Great lesson, thanks!!

  8. Avataaar/Circle Created with python_avatars Seiskid says:

    Good diagnosis. Nice to see a mechanic using a scope.

  9. Avataaar/Circle Created with python_avatars Tony Kilbourn says:

    Thanks for listening to us. Keep uscope training coming!

  10. Avataaar/Circle Created with python_avatars Randy Gould says:

    i love my u scope i use it every day . another shop came in last week with the same problem and less than two minutes i had a diag for them .love it

  11. Avataaar/Circle Created with python_avatars Scott B says:

    I got my uScope last week. Thanks for the tutorial and book recommendation!

  12. Avataaar/Circle Created with python_avatars geoffrwelsh says:

    also there is an adapter for uScope that allows you to view just the AC portion of the wave so you can really zoom in when necessary.

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

    Great video Eric O

  14. Avataaar/Circle Created with python_avatars Victor R says:

    Juan is my dad's brother

  15. Avataaar/Circle Created with python_avatars mark lavrack says:

    Wow you have all the latest tools. Just curious how much invested in all your tools?

  16. Avataaar/Circle Created with python_avatars Pete Medina says:

    Very cool diagnosis and nice liitle scanner or whatever it is.

  17. Avataaar/Circle Created with python_avatars KenLyns says:

    Crap Delphi blower…

  18. Avataaar/Circle Created with python_avatars Isshman Garcia says:

    Its great to see someone of your "automotive stature" embracing the uScope and giving honest opinions about a great product.

  19. Avataaar/Circle Created with python_avatars Cape CodBob says:

    It's guys like you that make fixin' my stuff so easy. I just google my issue and get a gazillion yotube vids. Keep up the good work. BTW I put vasilene on my Liberty gas cap O ring and my 456 code went away also my 300 but I didn't fix that ? And I got my sticker ! LOLOL

  20. Avataaar/Circle Created with python_avatars Arthur Fricchione says:

    Eric O Thanks so much for using the U scope. How are Mrs O's reindeer coming along? Have a good weekend. ❤️

  21. Avataaar/Circle Created with python_avatars roadkill5333 says:

    Do you ever get any criticisms??

    Or do you click the FILE 13 button, when they come in??

    Hmmm, maybe I should start leaving criticisms, to see if they come thru or not!! Let's give it a try.

    Your breath stinks!! U- scope? Try regular Scope!! It's minty fresh!! MRS O will love ya for it!!

    Hey. I just thought up a commercial jungle!! You can have all rights to it!! No charge!!

  22. Avataaar/Circle Created with python_avatars Jeff Keller says:

    At first I thought it was the switch malfunctioning.

  23. Avataaar/Circle Created with python_avatars Billy Yoder says:

    Thank you Eric. Good job.

  24. Avataaar/Circle Created with python_avatars Jeffry Blackmon says:

    Good use of that neat 'scope.

  25. Avataaar/Circle Created with python_avatars marty says:

    400 smakaroo's for that AES pocket picture!!!! Holy Smolly!!

  26. Avataaar/Circle Created with python_avatars Ronald Anderson says:

    That cool. Thanks for showing me / us this motor diagnosis method.

  27. Avataaar/Circle Created with python_avatars dean handley says:

    gutted it wasn't a fuse
    great vid
    great tip

  28. Avataaar/Circle Created with python_avatars Brad Smith says:

    Just make sure your fan motor is not controlled by PWM. I work on heavy trucks that have fan motors controlled by PWM. But if you set them to the highest setting, you should have a 100 percent duty cycle.

  29. Avataaar/Circle Created with python_avatars 8power0 says:

    AWESOME! THANKS AGAIN!

  30. Avataaar/Circle Created with python_avatars Richard 1 says:

    I wasted my money on the Auto Wave Single Channel Scope. Should have gotten that U Scope. Thank you again for another good video.

  31. Avataaar/Circle Created with python_avatars david26799 says:

    Man WTF is up YouTube I was subscribed to this Channel and when I checked right now it was unsubscribed 😡

  32. Avataaar/Circle Created with python_avatars MrGordozzzz says:

    bada bing bada boom.

  33. Avataaar/Circle Created with python_avatars Duncan Mac says:

    Thanks for the videos.

  34. Avataaar/Circle Created with python_avatars Tony the DIYer says:

    Thanks, I have been using scopes for many years and I never realized that you could check a brushed motor in that manner. DUH!!! Makes perfect sense, rather than me troubleshooting every little connection for resistance/conductance and opens. Then after all that, still no solution until I tear down the motor and find the brush/commutator in shambles…
    Thanks again.

  35. Avataaar/Circle Created with python_avatars JOGO says:

    Nice quick and to the point using the little oscilloscope, thanks

  36. Avataaar/Circle Created with python_avatars Gam3kid says:

    My wife's stopped blowing all together. Fuse was fine so I replaced the blower motor and it fixed it.

  37. Avataaar/Circle Created with python_avatars Rusty Ogden says:

    Should show what a good motor looks like. Rookies like my brother really struggle with wave forms and how to read and interpret them. Thanks for the great content eric. Ps jeep update lol

  38. Avataaar/Circle Created with python_avatars throttle bottle says:

    auto assumes a bad fuse/fusebox now :)))

  39. Avataaar/Circle Created with python_avatars Kevin Coulombe says:

    Nice I like that tool

  40. Avataaar/Circle Created with python_avatars Robert M Peelman says:

    What brand is BIG Nasty ?

  41. Avataaar/Circle Created with python_avatars Wisconsin Wanderer says:

    Thanks good info 😁

  42. Avataaar/Circle Created with python_avatars Pete Miller says:

    I took Eric's advice and ordered an AESwave U-scope and talked to Carlos. He was extremely helpful. I highly recommend, if you are going to buy the U-scope basic, seen in Eric O's video, that you call and place your order, 559-292-7851. Ask for Carlos, he will get you what you need

  43. Avataaar/Circle Created with python_avatars Jimmy S says:

    On my car the blower motor is dying. Few love taps gets it going until I hit a bump in the road which turns it back off. It either spins slow on high or not at all. Few more smacks gets it up to full speed but it quits after awhile. Not too fond since it died in Winter time here. But its easy to get at it.

  44. Avataaar/Circle Created with python_avatars ChillCosmos says:

    Have an 03 Envoy XL with rear AC. The rear blower will not come on when I want it to. Sometimes it will just come on out of the blue if I leave the switch on (at full blast). after driving around for a few minutes Never works anymore at any of the slower speeds (except for a quick burp of air through the vents then stops immediately).

  45. Avataaar/Circle Created with python_avatars Eric Turner says:

    If the fan is still spinning a little when you turn it back on it will probably always "start".

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