Squeak when reversing

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AZ_Path
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Squeak when reversing

Postby AZ_Path » Sat Jun 16, 2018 3:09 pm

When I drive in reverse I'm getting a squeaking noise. It increases in frequency as I speed up so I'm thinking it's something related to the drivetrain. I don't get the noise when in neutral and coasting backward nor do I hear it in driving forward. Here's a video of the noise. Any ideas? https://youtu.be/xO-QVsEsPgo


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smj999smj
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Postby smj999smj » Sat Jun 16, 2018 9:44 pm

It sounds like the warning squealers on the brake pads are touching the rotors to me. Check your brakes!

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AZ_Path
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Postby AZ_Path » Sun Jun 17, 2018 6:48 am

It is about time for new pads but I don't think that is the cause. When coasting in neutral it stops which wouldn't happen if it were the squealers, correct?

I did look underneath while having my wife drive yesterday and it sounds like it might be coming from the drive shaft. I'll see if I can get a video today.

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smj999smj
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Postby smj999smj » Sun Jun 17, 2018 6:45 pm

Well, when coasting in neutral, the warning squealers may not be touching the rotor surface, so they wouldn't squeak. If the sound it from the driveshaft, then a bad U-joint is a strong possibility.

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AZ_Path
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Postby AZ_Path » Mon Jun 18, 2018 9:43 pm

Here's a better video. https://youtu.be/TWFhRNNQmmk

You hear the squeak stop as soon as the tranny is put in neutral. Seems like that should indicate something right? What stops rotating in neutral but not reverse?

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smj999smj
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Postby smj999smj » Wed Jun 20, 2018 8:21 am

That sounds more like a U-joint. It's hard to really say from just a video. While it still turns in neutral (coasting), there is no load on the joint like there is in reverse.

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AZ_Path
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Postby AZ_Path » Wed Jun 20, 2018 8:53 am

Thanks for the help smj, always appreciate you sharing your input.

Is there a way to verify if it is the U-joint without taking too many things apart? I'm planning to give the Path to a family at our church and this just started happening. I'm trying to figure out if this is a minor annoyance that can be left alone for a while or if it needs to be addressed sooner than later.

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smj999smj
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Postby smj999smj » Thu Jun 21, 2018 1:28 am

You could check for physical play in the U-joint by grabbing the driveshaft and yoke and moving it back and forth and up and down.

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FLiPMaRC
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Postby FLiPMaRC » Thu Jun 21, 2018 9:31 am

Great job on getting that video :lol: :shock: :lol:

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labsy
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Postby labsy » Mon Jun 25, 2018 11:24 pm

Definitelly U-joint. I remember that sound from my case, it was rear driveshaft u-joint.


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