1. Welcome to the new home for MySportTrac.com!

    Please click here to find all the info about the move to the new site!

    To access your account you will need to reset your password here

Serpentine Belt is Slipping

Thread in 'Maintenance / Service' started by Jacob Hayes, Jan 9, 2019.

  1. Jacob Hayes

    Jacob Hayes Member 2nd Gen Owner V6 Engine

    Messages:
    35
    Likes Received:
    3
    Joined:
    May 4, 2016
    Location:
    West Paducah, KY
    So this morning I heard it making noise, I saw it had scooted off the bottom pulley (V6, that's the Power Steering Pump I believe) and it was running on the clutch or flywheel instead of the pulley.

    I got a new belt installed tonight, but when I got home I hear it making noise. Sure enough, the new belt had shifted down off the pulley also.

    I'm going to go over it all in the morning to see if something is loose, but has anyone else seen this issue? I searched and couldn't find any information.
     
  2. Jacob Hayes

    Jacob Hayes Member 2nd Gen Owner V6 Engine

    Messages:
    35
    Likes Received:
    3
    Joined:
    May 4, 2016
    Location:
    West Paducah, KY
    Hitched a ride to work today. I think I'm going to get a new tensioner and swap it out. The Motorcraft said these have a 150k durability rating, well I'm about 200k, so lets hope that fixes it. I can handle another $40 and the time it'll take to swap.

    CARQUEST by Dayco Automatic Belt Tensioner
    Part No: 89252 via Advance Auto Parts
     
  3. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    5,020
    Likes Received:
    41
    Joined:
    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
    Many here feel GATES has a better spring design vs. Dayco. Side by side pics comparing Gates and OE tensioners. Same yes?

    [​IMG][​IMG]
     
  4. EddieS'04

    EddieS'04 Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    17,108
    Likes Received:
    72
    Joined:
    Sep 26, 2004
    Location:
    Pasadena, TX
    DITTO for the Gates tensoner. Better because of using a flat wound spring vs wire wound spring. The flat wound spring has less bounce and stability, longer durability vs wire. I have used them on other Fords. When the day comes for my Trac, it will be Gates.
    Not sure if the gen2 pully arangement is the same as gen1 4.0L. I and others are using belts .5" shorter also, with good results.
     
  5. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    5,020
    Likes Received:
    41
    Joined:
    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
    EddieS'04 likes this.
  6. Jacob Hayes

    Jacob Hayes Member 2nd Gen Owner V6 Engine

    Messages:
    35
    Likes Received:
    3
    Joined:
    May 4, 2016
    Location:
    West Paducah, KY
    I didn't have a Gates locally available, but the Dayco is supposed to have a flat spring in it also (see link attached in comment above).

    I got it swapped on Thursday, then drove it all day Friday in the snow and ran errands on Saturday. Took back the tension I didn't use (the Litens) and had Advance check my battery, start and alternator while I was there. Everything checked good.

    Sunday it stalled out on me when I was trying to get 10 minutes down the road. No idea what went wrong. But it doesn't seem belt/tensioner related. So I'm having my guy look at it further. I'm wondering if my fuel pump has given up. I turn the key and it tries to turn over, but it won't just do it. I hear my dad's voice telling me "Fuel, Air, Spark". And I know I just swapped the air filter, and that the electronics are solid, so that leaves "fuel" up in the air.
     
  7. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    5,020
    Likes Received:
    41
    Joined:
    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
  8. EddieS'04

    EddieS'04 Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    17,108
    Likes Received:
    72
    Joined:
    Sep 26, 2004
    Location:
    Pasadena, TX
    That is strange. I had an article a few years back about gates flat spring. Maybe they switched builders, like china..
    I might have saved the article, I will look. Now Im confused also.
    Thanks, Steve
     
  9. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    5,020
    Likes Received:
    41
    Joined:
    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
  10. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

    Messages:
    20,670
    Likes Received:
    104
    Joined:
    Sep 21, 2003
    Location:
    Suffolk County (Long Island), NY
    MAKE sure its not a bad Crank pulley Harmonic balancer !!
     
    swshawaii likes this.
  11. Jacob Hayes

    Jacob Hayes Member 2nd Gen Owner V6 Engine

    Messages:
    35
    Likes Received:
    3
    Joined:
    May 4, 2016
    Location:
    West Paducah, KY
    Todd, what on earth is that?

    Did you make that up?
     
  12. Jacob Hayes

    Jacob Hayes Member 2nd Gen Owner V6 Engine

    Messages:
    35
    Likes Received:
    3
    Joined:
    May 4, 2016
    Location:
    West Paducah, KY
    Found it.

    So that was the pulley I thought I was having issues with in the original post. The balancer has 2 pulleys on it, and the belt only uses the smaller pulley closet to the radiator When I tried to get the belt onto the bigger pulley the routing didn't line up and it would move down.
     
  13. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    5,020
    Likes Received:
    41
    Joined:
    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
  14. Jacob Hayes

    Jacob Hayes Member 2nd Gen Owner V6 Engine

    Messages:
    35
    Likes Received:
    3
    Joined:
    May 4, 2016
    Location:
    West Paducah, KY
    Man, after reading some of those posts, I'm pretty convinced it's the harmonic balancer. Thank god it didn't do that when I was driving home in the snow with the kids Friday night. Here's hoping for the $250-$350 bill most guys reported.
     
    swshawaii likes this.
  15. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    5,020
    Likes Received:
    41
    Joined:
    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
    Good call on Todd's part. Seemed to be a more common failure years ago. Now days it's timing chains and transmissions. GL
     
  16. EddieS'04

    EddieS'04 Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    17,108
    Likes Received:
    72
    Joined:
    Sep 26, 2004
    Location:
    Pasadena, TX
    I have been running the underdrive pully set for maybe 8yrs. I wonder if I can ever expect the harmonic to fail?
    Im not sure a new one could be found. Never looked for availability, purchased my set from a member.
    pullys.jpg
     
  17. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    5,020
    Likes Received:
    41
    Joined:
    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
  18. EddieS'04

    EddieS'04 Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    17,108
    Likes Received:
    72
    Joined:
    Sep 26, 2004
    Location:
    Pasadena, TX
    Steve the crank/harmonic pully is small in diameter than OEM...
     
  19. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

    Messages:
    5,020
    Likes Received:
    41
    Joined:
    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
    Sorry Eddie, not thinking. Mustang forums may be good source for leads. GL
     
  20. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

    Messages:
    20,670
    Likes Received:
    104
    Joined:
    Sep 21, 2003
    Location:
    Suffolk County (Long Island), NY
    Eddie, I would hope aftermarket was manufactured batter then the OEM crap..... I have not heard of 1 failing yet..... I have heard of tones of the OEM....
     

Share This Page