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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Pulley & water pump question in Past Cadillac Vehicle Discussion; True, but where do you draw the line? Using that line of thinking, why not replace all 4 wheel bearings ...
  1. #16
    Ranger's Avatar
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    Re: Pulley & water pump question

    True, but where do you draw the line? Using that line of thinking, why not replace all 4 wheel bearings as well? How about the serpentine belt idler and tensioner? The list could go one and on.

  2. #17
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    Re: Pulley & water pump question

    Quote Originally Posted by ryannel2003 View Post
    Yeah mine isn't constant. As soon as you hit the throttle the noise goes away and it seems to be more common when the car is warm. It doesn't happen when starting it up in the morning but if I did continue to drive on it it would get much worse all the time. Ordering one next week.
    -------------------------------
    you have received the only WARNING you will get -

    personally - I wouldn't drive any farther that the parts store -

    or any farther than you can walk home WHEN it seizes -

    ----------

    Quote Originally Posted by Ranger View Post
    True, but where do you draw the line? Using that line of thinking, why not replace all 4 wheel bearings as well? How about the serpentine belt idler and tensioner? The list could go one and on.
    ------------------------------
    but where do you draw the line?
    MY "rule of thumb" -

    1) if that questionable part fails -
    would it leave you on the side of the road - absolutely stranded -
    or put you in a dangerous/hazzardous situation -

    2) if that questionable part fails -
    will it cause additional - expensive - damage -

    3) how bad would it be IF you were stranded on the side of the road -

    4) do you have towing insurance -

    5) what "trauma" would it cause you -
    to loose the use of your car for a day -
    while it gets towed and repaired -

  3. #18
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    Re: Pulley & water pump question

    Ok I replaced the pulley tensioner today and it's still making a noise. However once I listed to the noise again it's not a squeaking noise at all... I can't describe it but it does sound like a bearing noise. Anyway listen for yourself and see what you all think


  4. #19
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    Re: Pulley & water pump question

    Sounds like a healthy Northstar to me - there ARE 32 valves and their hydraulic operating components happily ticking away in there.

    What's it sound like up around 3,800 in P - just before engine rpm cutoff in N or P ???

    Look back at my picture - your tensioner lasted until (at least) 107,000 - mine went at 56,000. Go figure.
    CadillacLuke24 likes this.

  5. #20
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    Re: Pulley & water pump question

    Quote Originally Posted by Submariner409 View Post
    Sounds like a healthy Northstar to me - there ARE 32 valves and their hydraulic operating components happily ticking away in there.

    What's it sound like up around 3,800 in P - just before engine rpm cutoff in N or P ???
    What does it sound like? Sweet music. I would say comparable to the best orchestra in the world.

    But no noise at all. It just does it at idle and when sitting. Guess i'm good then but I am glad I replaced that pulley because it was definitely going bad.
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  6. #21
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    Re: Pulley & water pump question

    Quote Originally Posted by ryannel2003 View Post
    What does it sound like? Sweet music. I would say comparable to the best orchestra in the world.
    Ol' Clarkson was right. This engine doesn't need a distributor. It needs a conductor

  7. #22
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    The quote was "fuel injection", not "a distributor".
    CadillacLuke24 likes this.

  8. #23
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    Re: Pulley & water pump question

    Just replaced the idler pully at 245,000 miles on my "03 Deville, so they can last that long. I was lucky; the pulley came apart eating the belt - no water circulation = overheating.

  9. #24
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    Re: Pulley & water pump question

    in your video - I think I hear what you do -

    there is a heavier click - almost a short rattle - every once in a while -
    as in a worn ball bearing hitting another bearing -

    when you had the belt off - can we assume you spun the water pump -
    and it was free/tight and quite?

  10. #25
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    Re: Pulley & water pump question

    Quote Originally Posted by basscatt View Post
    in your video - I think I here what you do -

    there is a heavier click - almost a short rattle - every once in a while -
    as in a worn ball bearing hitting another bearing -

    when you had the belt off - can we assume you spun the water pump -
    and it was free/tight and quite?
    Yes that's exactly the noise and how I would describe it. I was in a rush so no I didn't spin the pump; I'll check it this weekend when it's not so hot. My BMW made a very similar noise and it was the water pump so that's why I asked about it in the original question.

  11. #26
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    Re: Pulley & water pump question

    Quote Originally Posted by ryannel2003 View Post
    Yes that's exactly the noise and how I would describe it. I was in a rush so no I didn't spin the pump; I'll check it this weekend when it's not so hot. My BMW made a very similar noise and it was the water pump so that's why I asked about it in the original question.
    --------------------------------------
    I'll check it this weekend when it's not so hot
    keep your fingers crossed it lasts til the weekend -

    if it is the water pump bearing failing - and it locks up -
    it could cause all sorts of problems -
    including destroying the water pump drive pulley -

  12. #27
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    Re: Pulley & water pump question

    Yeah I'll have to make some time. It actually has been making noise since I bought the car a month ago but I never noticed it until a few days after when I was in the drive through line and I heard the noise. From doing a bit of research on the forums it sounds like a common issue with these cars. Strange that this pump only has 50k miles and if that is in fact the problem that it didn't last very long. The one on my STS had 62k miles and never gave me an issue.

    ----------

    So I'm 99% sure its the water pump because the noise is coming from directly around that area. I'm thinking since I need to go ahead and drain the coolant from the car anyway this summer I think it's a good idea to do the pump and eliminate any potential trouble spots. (I'll double check for that noise soon though). In the meantime I have two options for ACDelco pumps on RockAuto; one with a cast iron impeller for $32 and one with a stamped steel impeller for $59. Is this one of those "get what you pay for" type deals or does it really matter? Also should I get the water pump cover gasket as well? It's not leaking but it probably wouldn't hurt to get it anyways. Also... best place to order pump removal tool? Or can I rent that?

    Thanks!

  13. #28
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    Re: Pulley & water pump question

    Quote Originally Posted by ryannel2003 View Post
    Yeah I'll have to make some time. It actually has been making noise since I bought the car a month ago but I never noticed it until a few days after when I was in the drive through line and I heard the noise. From doing a bit of research on the forums it sounds like a common issue with these cars. Strange that this pump only has 50k miles and if that is in fact the problem that it didn't last very long. The one on my STS had 62k miles and never gave me an issue.

    ----------

    So I'm 99% sure its the water pump because the noise is coming from directly around that area. I'm thinking since I need to go ahead and drain the coolant from the car anyway this summer I think it's a good idea to do the pump and eliminate any potential trouble spots. (I'll double check for that noise soon though). In the meantime I have two options for ACDelco pumps on RockAuto; one with a cast iron impeller for $32 and one with a stamped steel impeller for $59. Is this one of those "get what you pay for" type deals or does it really matter? Also should I get the water pump cover gasket as well? It's not leaking but it probably wouldn't hurt to get it anyways. Also... best place to order pump removal tool? Or can I rent that?

    Thanks!
    I am not a mechanic, but...

    I'd get the cast iron over stamped steel. Stamped steel is not much more than sheet metal. Cast iron is what they make brake rotors out of. Why the cost difference? Cast iron is cheaper?

    Gasket should be relatively cheap, replace it.

    I THINK you can rent a removal tool. Check at the local parts stores to see what they have available.

    Good luck dude. And if I didn't say it before, NICE DeVille

  14. #29
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    Re: Pulley & water pump question

    W/P's usually don't make noise when they fail. They leak. Before you jump the gun and start throwing parts at it, check the tensioner pulley bearing. THAT is much more likely to have a bearing fail and make noise.

  15. #30
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    Re: Pulley & water pump question

    Pulley is brand new and spins fine. My BMW had a failing water pump (it never leaked either) that made the exact same noise and the bearing had come loose causing all sorts of racket. From a few posts on the forums it seems that noisy water pumps aren't common but it does happen.

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