Possible bad transmission
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    Possible bad transmission

    This is a discussion on Possible bad transmission within the Dodge Dart General Discussion forums, part of the Dodge Dart Forum - Dodge Dart Discussion category; There is a humming noise coming from the engine bay when my car is going at high speeds; the noise goes away after a complete ...

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    1. #1
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      Possible bad transmission

      There is a humming noise coming from the engine bay when my car is going at high speeds; the noise goes away after a complete stop. My mechanic and I thought that the noise was the result of a bad wheel bearing and had it replaced just today, the problem is that the noise is still there and now my mechanic thinks that it could possible mean a bad transmission.

      Has anyone had this problem with their transmission before? I haven't had any major issues with this car yet but if that's the case, then I'll probably end up leasing a new car as I don't want to pay for a new transmission.

      Any advise will be appreciated

      My car is a 2013 Dodge Dart SE 2.0 Automatic with 90,000 miles
      Last edited by Miguel10009; 07-12-2019 at 09:56 PM.

    2. #2
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      Quote Originally Posted by Miguel10009 View Post
      There is a humming noise coming from the engine bay when my car is going at high speeds; the noise goes away after a complete stop. My mechanic and I thought that the noise was the result of a bad wheel bearing and had it replaced just today, the problem is that the noise is still there and now my mechanic thinks that it could possible mean a bad transmission.

      Has anyone had this problem with their transmission before? I haven't had any major issues with this car yet but if that's the case, then I'll probably end up leasing a new car as I don't want to pay for a new transmission.

      Any advise will be appreciated

      My car is a 2013 Dodge Dart SE 2.0 Automatic with 90,000 miles
      A hmmmmm noise seems rather unlikely from a tranny...how does it shift? Realistically if there's any issue with an auto tranny your shifting would be erratic or it will skip/slip. You will notice more than a noise when it's done for....

      Manual? Maybe the clutch is constantly slipping which is of course no bueno, but noise I can't comment on.

      Has he checked the calipers at all? Those could make some serious humming sounds when they sieze as I've been there....
      Last edited by Parabolaralus; 07-12-2019 at 11:25 PM.
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      Important question: can you reproduce the hum noise at idle or even gunning it in your driveway?
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      The shifting is perfect between gears, it doesn't slip or skip. I have not checked the calipers so thanks for giving me an idea ( I haven't had any problems braking though).

      The noise only happens when driving and going above 30 MPH. I cannot reproduce the noise at idle or even if a gun it in the driveway (I've already tried).

      I seriously hope it's not the transmission because that would put a hole in my wallet.

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      Can you put the front end on jack stands? You can the get under there and have a helper put it in gear, accelerate slowly and you can listen for the humm. A piece of rubber hose to your ear can help isolate the sound. Be very careful not to get get your hands or hair caught in anything that's moving.
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      Quote Originally Posted by alpinegreenneon View Post
      Can you put the front end on jack stands? You can the get under there and have a helper put it in gear, accelerate slowly and you can listen for the humm. A piece of rubber hose to your ear can help isolate the sound. Be very careful not to get get your hands or hair caught in anything that's moving.
      My mechanic put the car on a lift today and made it run for 5 minutes to see if he could hear the noise again... the humming noise is gone when the car is on a lift ( no wheel bearing noise or anything).

      When the car is on the road and as soon as it hits exactly 40 MPH the humming noise reappears. So now we are thinking the noise could be coming from the rear tires as they are over 50k miles each and are in bad shape. If that's the case, then I'm really glad it's the tires causing the noise and not the transmission.

      Could a tire really make such a loud humming noise when it's time to replace it? I'm also thinking the rear tires could be unbalanced.

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      Quote Originally Posted by Miguel10009 View Post
      My mechanic put the car on a lift today and made it run for 5 minutes to see if he could hear the noise again... the humming noise is gone when the car is on a lift ( no wheel bearing noise or anything).

      When the car is on the road and as soon as it hits exactly 40 MPH the humming noise reappears. So now we are thinking the noise could be coming from the rear tires as they are over 50k miles each and are in bad shape. If that's the case, then I'm really glad it's the tires causing the noise and not the transmission.

      Could a tire really make such a loud humming noise when it's time to replace it? I'm also thinking the rear tires could be unbalanced.
      Yes, worn tires can be very noisy and can make humming, rumbling, or growling noises. If the rear tires are unbalanced, you should feel a vibration through your seat (if it's the front wheels, you will primarily feel it in the steering wheel).

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      Tires are the first thing to check for a noise like described. My experience has been that a tire(s) can cause all sorts of loud noises. Even tires that look good and are checked for balancing and alignment can have shifted steel belts and other internal faults depending on the manufacturer. I've yet to have tires that went their full average mileage of wear before starting to make noise that bugs me, let alone a bad noise.
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      Quote Originally Posted by dad's dart View Post
      Tires are the first thing to check for a noise like described. My experience has been that a tire(s) can cause all sorts of loud noises. Even tires that look good and are checked for balancing and alignment can have shifted steel belts and other internal faults depending on the manufacturer. I've yet to have tires that went their full average mileage of wear before starting to make noise that bugs me, let alone a bad noise.
      Thanks for the info. I've already ordered new tires from amazon and I'm hoping this is the issue since we have isolated the noise coming from the rear.

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      That's going to be spendy buying tires online. Shops will not guarantee the tires and you pay for flats, plus mounting and balancing.
      SylenThunder likes this.

     

     
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