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  1. 04-05-2014, 02:49 PM #1
    RhinoZ24
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    I have an Edge Evolution Programmer on my 2005 4.6L V8 F-150. The tune I have it set on firms up the shifts but it seems to be at the same shift rpm at WOT as stock. However, (and this has been occurring for months) it squeals when shifting from 1st to 2nd at WOT. It first started out as only when I was already rolling and then gunned it, it would squeal at the shift. Now it's anytime at WOT from first to second gear, rolling or from a stop. The sound sounds like a belt squeal almost (its a screeching/squealing noise at the shift, not a grinding noise though) and I fear it's the tranny slipping. Any ideas what it is and how bad it is and what damage I may have caused? If I adjusted the tune to lower the shift point do you think it would solve the issue? I have avoided gunning it for the past few months in hopes of not causing further damage. Thanks in advance!


    And heres the pictures you asked for Alfie, if they help any. Its kind difficult because the coolant hose is right above the pulley for the alternator.
    Last edited by RhinoZ24; 04-05-2014 at 02:59 PM.
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  2. 04-05-2014, 02:52 PM #2
    RhinoZ24
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    Sorry they didn't all attach.

    Attachment 7054



    Attachment 7055
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  3. 04-05-2014, 02:54 PM #3
    RhinoZ24
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    Last one lol
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  4. 04-05-2014, 03:40 PM #4
    RhinoZ24
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    Also when it does the squeal while shifting, it seems to shift really hard (but that's the programmer firming the shifts) and it almost seems like it takes a second to shift as well.
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  5. 04-05-2014, 03:51 PM #5
    alfie
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    Can't really see the front. Were the nut holds the pulley on. The thing is. If u hear a squeal noise when it shifts. What happens is when your at peak rpm and shift gears. The alternator force wants to keep turning. But the engine suddenly and quickly drops in RPMs. These two forces (alternator wants to keep spinning and engine wants to slow down ) causes the belt to slip on the alternator pulley. This is what people he's when they say they hear a squeal when shifting gears. There really isn't a fix unless you switch to a one way clutch pulley like on the newer cars.


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    Yeah that's not a clutch pulley.


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  6. 04-05-2014, 04:49 PM #6
    RhinoZ24
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    Are you sure thats what it is, I mean it makes sense because the noise seems to be coming from the engine not below me on the transmission. My only concern is that its gotten worse. Would replacing the pulley and the belt help any? And would switching to a clutch alternator be expensive?
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  7. 04-05-2014, 05:26 PM #7
    Jersey_Joe
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    Quote Originally Posted by RhinoZ24 View Post
    Are you sure thats what it is, I mean it makes sense because the noise seems to be coming from the engine not below me on the transmission. My only concern is that its gotten worse. Would replacing the pulley and the belt help any? And would switching to a clutch alternator be expensive?
    Yup. Had the same thing on my stock 5.4 in my 03. And no. It's not that expensive. But with cure your problem. It is annoying
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  8. 04-05-2014, 05:45 PM #8
    RhinoZ24
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    How much was the clutch alternator for you Joe? And did it have a higher amp rating than the stock one too? Looking to add some accessories that will be using some juice so might as well step up the power source lol.
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  9. 04-05-2014, 06:11 PM #9
    alfie
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    U can also just swap the pulley. That's the cheapest route. But still not cheap.


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  10. 04-05-2014, 06:30 PM #10
    Jersey_Joe
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    Quote Originally Posted by RhinoZ24 View Post
    How much was the clutch alternator for you Joe? And did it have a higher amp rating than the stock one too? Looking to add some accessories that will be using some juice so might as well step up the power source lol.
    You'll b better off just swapping the pully like Alfie said. I had an upgrade I had a Dual batt kit with a bigger alt. it was a bunch of overkill. Headlights were nice and bright tho lol. I wasn't really killin amps with all my accessories. I'll bet I could have done fine with a single set up. I think it was 285? Been awhile home slice lol
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