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Thread: how do i know if my Alternator is bad or the bearing?

  1. #16
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    Quote Originally Posted by MercNasty View Post
    Ok so I hadnt been able to take my belt off and inspect the pullies and alternator but earlier today I was in my mechanics neighborhood so I stopped by and had him look at it again, The very first time i took it to him about the noise a few weeks ago, he said it was the alternator now today with me mentioning the tensioner and Idiler, he said its the tensioner and wants to charge me $450 to fix it. I am going to take it somewhere else and get a second opinion because he didnt take the belt off or anything he just rev the engine a few times and said it was the tensioner. I thought this guy was a good mechanic and he likes MM so I figured i could trust him. He has done good work for me in the past but Im not to sure about him this time. What are some of the signs that it could indeed be the tensioner? Im not having any problems driving the car its just a loud noise that appears to coming from somewhere around the alternator. Its like a mild squeak/squeal. Please help
    $450.00 to replace the tensionor pulley!!!!

    Is going to take you to dinner and a movie before he screws you????

    Go to a FLAPS, get the parts and do the job yourself. here are the part numbers.

    Belts:
    Serpentine (NAPA) – PBH4060923 - stock
    Gatorback (Goodyear) – 4060922 - stock

    Belt Tensioner:
    Dayco – 305291
    Goodyear – 49293

    Idler Pulleys:

    Dayco (smooth) - 89007
    FoMoCo (ribbed) - YW7Z-8678-AA

    Should take less than 30 minutes to swap out the parts.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  2. #17
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    Quote Originally Posted by fastblackmerc View Post
    $450.00 to replace the tensionor pulley!!!!

    Is going to take you to dinner and a movie before he screws you????

    Go to a flaps, get the parts and do the job yourself. Here are the part numbers.

    belts:
    serpentine (napa) – pbh4060923 - stock
    gatorback (goodyear) – 4060922 - stock

    belt tensioner:
    dayco – 305291
    goodyear – 49293

    idler pulleys:

    dayco (smooth) - 89007
    fomoco (ribbed) - yw7z-8678-aa

    should take less than 30 minutes to swap out the parts.



    lmfao!!!!!!!!!!!

  3. #18
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    Whooooo.... what a laugh! Well if it makes you fell better I have the same problem and I've fix each part by troubleshooting with the steps that have been given to you. I'm down to changing what's left which is my alternator.

  4. #19
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    Quote Originally Posted by fastblackmerc View Post
    $450.00 to replace the tensionor pulley!!!!

    Is going to take you to dinner and a movie before he screws you????
    Yeah sure sounds like your mechanic is in love(or at least in heat) with you, $450 is a royal screwing indeed... That much money will buy a tensioner, all the pulleys, plus the alternator and you'd still have money to take your honey to dinner & a movie...
    45Kmi - Eaton SC - 430RwHp - SOLD!!!!





  5. #20
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    Ok, First I sprayed the shaft of the pulley with the car running and I waited a while for the lube to get in there but the noise was still present. I took the belt off which was easier than I thought, thanks to MrBluGruv, and spun the alternator pulley as fast as I could to the left and to the right. It makes more noise spinning it to the left than it does the right, the noise almost sounds like a small rock or something spinning in there. So now that we know the noise in there is noise in the alternator pulley when spun, do I just need to replace the alternator pulley?
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  6. #21
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    So from what im understanding is since the pulley on the ALT makes noise when i spin it without the belt on means I will have to replace the ALT?
    2003 Black MercNasty
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  7. #22
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    Since it makes more noise spinning to the left, you'd think it was the pulley that was faulty... BUT if the pulley was the total problem, it should be smooth/quiet turning clockwise, from your description sounds like the pulley and the alternator both have issues...

    Be a good idea to check all the idler pulleys while you are checking it out...
    45Kmi - Eaton SC - 430RwHp - SOLD!!!!





  8. #23
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    Changed the belt, belt tensioner, and the pullies today the noise is still present, so i guess i will just go ahead and replace the alternator, hopefully that will be it.
    2003 Black MercNasty
    Diablo Predator Tunned
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  9. #24
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    Changed the belt, belt tensioner, idler pulley and the alternator. The noise is still there, i dont know WTF to do now, I dont have anymore money to be spending on this car right now. Im about to lose my mind
    2003 Black MercNasty
    Diablo Predator Tunned
    JLT CAI
    Ford 4:10 Gears
    Drill Slotted rotors
    Aero Turbines 2525
    Pirelli Tires
    Ford Bob White Chrome Bumper insert- Overpriced

    Coming soon
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    Tinted Windows
    Stereo System
    And maybe more Engine Mods

  10. #25
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    What brand belt did you install?
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  11. #26
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    goodyear gator back
    2003 Black MercNasty
    Diablo Predator Tunned
    JLT CAI
    Ford 4:10 Gears
    Drill Slotted rotors
    Aero Turbines 2525
    Pirelli Tires
    Ford Bob White Chrome Bumper insert- Overpriced

    Coming soon
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    And maybe more Engine Mods

  12. #27
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    Went to 4 different autozones today and had both alternators check the new used one thats in the car and the old one that i took out the car. All 4 said both alternators are good after testing. So now im lost. Does anyone have anymore ideas.? Im not having any issues with the car, its just the noise that appears to be coming out the alternator but im not 100% sure. Could it be the bearing in the alternator making the noise?
    2003 Black MercNasty
    Diablo Predator Tunned
    JLT CAI
    Ford 4:10 Gears
    Drill Slotted rotors
    Aero Turbines 2525
    Pirelli Tires
    Ford Bob White Chrome Bumper insert- Overpriced

    Coming soon
    Valentine 1 radar detector
    Tinted Windows
    Stereo System
    And maybe more Engine Mods

  13. #28
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    have you checked your a/c clutch?
    04 MERCURY MARAUDER build date:02/11/04
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  14. #29
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    yes the A/C clutch pulley is fine.
    2003 Black MercNasty
    Diablo Predator Tunned
    JLT CAI
    Ford 4:10 Gears
    Drill Slotted rotors
    Aero Turbines 2525
    Pirelli Tires
    Ford Bob White Chrome Bumper insert- Overpriced

    Coming soon
    Valentine 1 radar detector
    Tinted Windows
    Stereo System
    And maybe more Engine Mods

  15. #30
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    Damn, if you replaced all that and the chirping noise is still there.....water pump?


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    WIN WIN!~ Zack
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