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

  1. #31
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    Quote Originally Posted by MercNasty View Post
    yes the A/C clutch pulley is fine.
    I'd disconnect the electrical connector. Mine chirps when it engages & disengages.
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  2. #32
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    I will check the water pump tomorrow, but wouldnt the car be running hot if it was the water pump?


    Quote Originally Posted by CBT View Post
    Damn, if you replaced all that and the chirping noise is still there.....water pump?
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  3. #33
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    Quote Originally Posted by MercNasty View Post
    I will check the water pump tomorrow, but wouldnt the car be running hot if it was the water pump?
    Not at first, no.


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  4. #34
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    Ok well i will check that tomorrow, hopefully thats it. Could the bearings be bad on the alternator but it stills functions properly?


    Quote Originally Posted by CBT View Post
    Not at first, no.
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  5. #35
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    Quote Originally Posted by MercNasty View Post
    Ok well i will check that tomorrow, hopefully thats it. Could the bearings be bad on the alternator but it stills functions properly?
    It will function until that pully no longer spins, but I thought you tried two already? I wish you lived closer, we'd swap everthing off mine one piece at a time until we found the flippin problem, lol.


    ~But, it makes it a lot easier when he is manscaped.~ Haggis
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  6. #36
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    Quote Originally Posted by MercNasty View Post
    I will check the water pump tomorrow, but wouldnt the car be running hot if it was the water pump?
    Take the belt off the water pump and spin it. See if it makes any noises or doesn't spin freely.

    Or get a long screwdriver and rest it on the water pump while the engine is running. Put your ear on the other end of the screwdriver, if it's the water pump you'll hear it.
    “When you can’t make them see the light, make them feel the heat.”
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    “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"
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  7. #37
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    Yea I wish one of you MM wizards lived closer, I love working on the car but sometime Im ready to pull my hair out which isnt very long. I just hate thinking that I found the problem only to find that aint it. But I cant wait to tomorrow, so Im headed back to the garage now to take the belt off and test the water pump like FBM suggested, I will report my finding tomorrow AM. I really appreciate all the help guys.
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  8. #38
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    Ok just in from the garage. Took the belt off again and spun everything from the roota to the toota.

    -1rst: spun the alternator pulley, spun to the right, takes about 4 seconds to stop and there is a lil whisp/whine noise when it spins. Spun to the left, no noise but and not much spin due to it being a clutch pulley.

    -2nd: spun the water pump pulley, there is no free spin and it only takes about 2-3 seconds to stop spinning in each direction. We spun to the left I hear what I believe was water but no other noise. When spun to the right there is a light ticking noise.

    -3rd: spun the A/C compressor, it takes about 4 seconds to stop spinning in each direction and it makes a small noise but not very noticeable.

    Everything else spun with no noise, Im thinking about sending the used alternator back and just buying a new one along with buying a new water pump and pulley. I maybe just getting New happy but I really dont want to spend anymore money unless its going to fix the problem.

    What do you all think now after this inspection?
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  9. #39
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    Quote Originally Posted by MercNasty View Post
    Ok just in from the garage. Took the belt off again and spun everything from the roota to the toota.

    -1rst: spun the alternator pulley, spun to the right, takes about 4 seconds to stop and there is a lil whisp/whine noise when it spins. Spun to the left, no noise but and not much spin due to it being a clutch pulley.

    -2nd: spun the water pump pulley, there is no free spin and it only takes about 2-3 seconds to stop spinning in each direction. We spun to the left I hear what I believe was water but no other noise. When spun to the right there is a light ticking noise.

    -3rd: spun the A/C compressor, it takes about 4 seconds to stop spinning in each direction and it makes a small noise but not very noticeable.

    Everything else spun with no noise, Im thinking about sending the used alternator back and just buying a new one along with buying a new water pump and pulley. I maybe just getting New happy but I really dont want to spend anymore money unless its going to fix the problem.

    What do you all think now after this inspection?
    Sounds like you'll be chasing this thing for a while if you went thru 2 alternators and a few pullys.


    ~But, it makes it a lot easier when he is manscaped.~ Haggis
    ~Cool, I can have one of those strangulation orgasms without the strangle.
    WIN WIN!~ Zack
    ~Who needs to stop? I just wanna gooooooooooo ~ -Matt-

  10. #40
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    Was very interesting to me that I posted a question yesterday on a chirping or cricket like sound under the hood only to find this thread. My mechaic checked out the Marauder today and took all the suggestions and couldn't find tension pulley, alternator, other type pulley or bearing problem. He advised my belt looked a bit dried out and worn and since I only had a little over a year he felt it was defective so he put a new one on for free ! Hopefully this was a simple fix.
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  11. #41
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    so the new belt fix your noise?

    Quote Originally Posted by 04MRADR View Post
    Was very interesting to me that I posted a question yesterday on a chirping or cricket like sound under the hood only to find this thread. My mechaic checked out the Marauder today and took all the suggestions and couldn't find tension pulley, alternator, other type pulley or bearing problem. He advised my belt looked a bit dried out and worn and since I only had a little over a year he felt it was defective so he put a new one on for free ! Hopefully this was a simple fix.
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  12. #42
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    I had my neighbor look at it who stays a few doors down and he pretty much said the same thing as the first mechanic, he wants to open up the motor and inspect it as that is where he think the noise is coming from, he said it may be the tensioner by the timing chain or something like that. Im going to have 2 more people look at it tomorrow. Both of them supposedly have tools where they can find out exactly where the noise is coming from. I really dont want to have to open up the motor but looks like im running out of options.
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  13. #43
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    Just to be clear, you ran the motor with the belt off and it still makes the sound?
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  14. #44
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    That is correct, I took the belt off twice and ran the motor the noise is still the same. I wish i would have did that first before i replaced the pullies, I could off saved a few bucks.

    Quote Originally Posted by RF Overlord View Post
    Just to be clear, you ran the motor with the belt off and it still makes the sound?
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  15. #45
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    Quote Originally Posted by MercNasty View Post
    That is correct, I took the belt off twice and ran the motor the noise is still the same. I wish i would have did that first before i replaced the pullies, I could off saved a few bucks.
    If that's the case then there might be an issue with the timing chains or guides.
    “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




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