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  • A/C dash air fan

    Posted by AL on August 13, 2015 at 9:07 pm

    Today on a road test the dash air fan speed began slowing from the second position then speed up. All works fine, constant speed. A minute later begins slowing again, then increase back to set speed.

    Any ideas or experience with this strange mind of its own dash fan speed control ?

    Thanks,

    AL

    AL replied 11 years ago 8 Members · 13 Replies
  • 13 Replies
  • Jacky

    Member
    August 13, 2015 at 9:30 pm

    The only thing I can come up with is either bearing developing trouble or fluctuations in voltage or a developing problem with the brushes unless it is a brushless motor.

  • Archived

    Member
    August 15, 2015 at 11:10 am

    Moved post for Bob..

    Had this problem with mine and found loose ground. Couldn’t reply to Al Post for some reason. Bob

  • AL

    Member
    August 15, 2015 at 7:06 pm

    Where was the ground location ?

  • Robert

    Member
    August 15, 2015 at 11:24 pm

    My coach does the exact same thing. I find that if I tap the right side of the dash air controller with something solid, my iPhone seems to work best, the fan speed resumes its normal speed…until I hit another sizable bump. Then I have to tap it again. Glad to hear it might be a loose ground. Was thinking I was just on borrowed time with the controller.

  • AL

    Member
    August 16, 2015 at 9:10 am

    Let me see if I have this correct. If the dash air falters tap the $23 switch with a $600 iPhone and it works for a while…Got it! :<)

    Ah, the joys of Prevost ownership.

    Fred

  • AL

    Member
    August 16, 2015 at 12:36 pm

    This worked for me. Remove the switch from the dash. Spray it with electronic parts cleaner while rotating the switch. Repeat this a couple of times.

    Ken

  • Tim

    Member
    August 16, 2015 at 1:20 pm

    Jon/Tom…..I just knew this Tripple FoxTrot guy was going to be trouble.

  • joel

    Member
    August 16, 2015 at 1:34 pm

    I’m not the person to say something is wrong with bashing a $600 cell phone against a defective switch.

    I think triuple F is on the right track and I would go so far as part of the pre-trip inspections everybody should try fixing their hammers by smacking them with their smart phones. Repeatedly. And if the phone seems to appear damaged, try smacking the phone with the tire iron. I understand that is the best way to fix one.

    Has anyone mentioned how I feel about the use of phones in the bus while driving?


    1999 XLV X-6872,  liberty #440
  • Fred

    Member
    August 16, 2015 at 2:25 pm

    I generally use my Rolex.

  • Archived

    Member
    August 16, 2015 at 2:49 pm

    How has a little tap with iphone turned into hammers, tire irons and Rolex’s ?

    Bill S

  • Bill

    Member
    August 16, 2015 at 6:51 pm

    B-n-A, you haven’t figured that out yet….you will. Geo.

  • Archived

    Member
    August 16, 2015 at 7:42 pm

    I’m learning Geo. LOL

    Bill S

  • AL

    Member
    August 16, 2015 at 7:49 pm

    Bill, it’s called ‘thread creep’ and some of us are really good at it. ;<)

    Al, I just want you to know that I resemble that remark you made. Someone once ask me why I was such a troublemaker and I replied “Because I practice, that’s why.”

    Wishing everyone a great week, smooth roads and a strong tail wind.

    3-F

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