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New half shaft popping noise?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Desert Flier, May 7, 2020.

  1. Desert Flier

    Desert Flier Member

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    Greetings. I recently replaced all suspension components and brakes/calipers on my 2005 Prius. Control arms, inner/outer tie rods, sway bar links, all rubber bushings, half shafts, etc. I'm very happy with it but I have one issue. When I accelerate from a stop I hear and feel a loud bang/clunk sound. As I begin slowing with the brake pedal applied I hear the same sound again. Sometimes just one bang/clunk sometimes two in immediate succession. This sound can NOT be duplicated by driving over speed bumps, pot holes, etc. It only occurs when I accelerate from a dead stop or on initial deceleration with application of the brakes. Accelerating or stopping while in a turn makes no difference. Otherwise the car drives straight and true with no unusual noises. HERE'S THE INTERESTING THING. Once I get the car moving if I shift the car into neutral and apply the brakes it WILL NOT pop/clunk. Of course I can't accelerate in neutral so I can't test that theory but all I can say for sure is that it seems to be effected by the transmission being engaged. It won't do this in reverse either. Only in forward drive. No issues like this prior to replacing the parts. The noise sounds like someone striking the end of the axle with a metal hammer. It's hard to pinpoint but if I had to guess I'd say it comes from the left front of the car when accelerating and from the middle front of the car when braking. Pretty much where the axle ends are? Very solid and metallic. I've inspected all of the bolts and parts and everything is tight. I'm suspecting a bad axle shaft. It doesn't pop while turning either which I know is a normal failure symptom of an axle. But I have read where axles can cause symptoms that I am having. They were ordered from new from RockAuto Cardone #665266 (left) and #665267 (right). Very appreciative for anyone's thoughts and opinions before I order replacement axles. I think it's the drivers side that is faulty.
     
  2. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    I've seen a high return rate on cardone axles for other applications, but have never changed an axle on a Prius.

    I agree with your diagnosis.
     
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  3. edthefox5

    edthefox5 Senior Member

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    If its an inner make sure the trans is not leaking fluid from it beating up that inner diff seal. hate to lose the trans over pos cardone shaft. Watch the ground in the am for leaks. Bang and metal clank is not good thats like differential stuff heavy metal stuff.

    Get under there and with gloves grab the outer and shake real hard same with inner see who's loose. Inspect inner shaft diff seals.

    I would never replace any toyota suspension part using anything but oem because of this very scenario. Is the stuff I bought crap or i just didn't put it in right? Now you have both to chose from. Seen this so many times on this forum.

    All that after market suspension gear now is all china crap. Horrible. Moog and cardone is the worst. The problem is the toyota stuff is crazy expensive. For a reason.

    How were you able to get the inner shafts out of the trans?
     
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  4. Kenny94945

    Kenny94945 Active Member

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    OP post reads that he has the talent for this mechanical repair.
    So installation error or damage is ruled out.
    Popping noise is a great lead.

    Yes get under the car and shake everything as Ed above suggested.
    As if you did not think of this all ready, lift the car securely start the engine and accelerate, try to replicate the noise.

    I also agree that aftermarket axles/half shafts can be a gamble.
    When I compare aftermarket to OEM I always see differences.
    That gamble is transmission wear/ failure versus axle cost.

    Outside the box thinking, acceleration raises the front end, so maybe the popping is strut related?
    All FWIW...good luck, let us know once solved.
     
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  5. Desert Flier

    Desert Flier Member

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    No leaks so far. I had replaced the seals when I installed the axles. The inner shafts popped out with a pry bar and a small piece of wood between the bar and the transmission. I used to own a transmission shop (absentee owner) and have popped a few of these out before without any problems. I'm suspecting the replacement axles are a too short in length. I did give a good tug and pull on the shafts a few weeks ago and did not see anything obvious.
     
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  6. Desert Flier

    Desert Flier Member

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    I'll give it a shake one more time. I did have it up on jacks and couldn't duplicate the sound even with it in gear and under load. This doesn't sound like strut noise. I've dealt with that before and I believe this is different. When I've had strut and coil issues it usually is easy to duplicate when going over a speed bump or such. In any case I inspected the struts and springs and there isn't any wear or rub marks anywhere. Springs are seated nicely as are the strut bumpers. My best guess is crappy axles. Probably a tad short perhaps? I will keep everyone informed. Seems like there might be lateral play?
     
  7. edthefox5

    edthefox5 Senior Member

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    Ok very good you sound like you know what your doing. Its alot of work. Good the trans seals are not leaking. I have had so much bad experience with crappy suspension parts have a bad taste about it. But the Toyota oem is really expensive. So...quite the dilemma.

    But you sound like you know whats up. Good luck.
     
  8. edthefox5

    edthefox5 Senior Member

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    I have heard that strut spring not seated correctly in its holder sound. Its pretty distinct. Loud loaded bang kinda thing. Bringing back bad memorys. I will never ever install a strut spring on a strut at home again lol. man is that dangerous.

    But It depends on how this job was done. I would not have scorched earth it I would have done a system then driven it a while. Struts then drive. Then cv joints and drive. See how each system install went. But thats just me Im no pro at this. Stab links are a pain in the nice person too noise wise.
     
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  9. Desert Flier

    Desert Flier Member

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    Yeah OEM parts are just ridiculously expensive. Like $350 versus $60 for an off brand axle. But I've used Cardone axles on my Sienna without any hiccups so maybe I just got a bad one? I'll take it apart and see if there is any damage before sending it back just out of curiosity. Cheers!
     
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  10. Desert Flier

    Desert Flier Member

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    I had considered doing it in bits and pieces. It's just such a headache. But this is the problem you face isn't it? You have to wonder what part is causing the problem. I installed quick struts from Monroe. I don't mess with building them anymore. Too much potential energy compressing those things!
     
  11. edthefox5

    edthefox5 Senior Member

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    Its a huge problem to jack the car up every time to do the suspension. Im not getting younger I really cant do it anymore. But just jacking it up and taking it down after laying on the ground all day wow that hurts real bad about 3 hours later.

    OEM joints are wicked expensive. seen so many issues on here with after's all noise and knocking and on and on.
     
  12. Desert Flier

    Desert Flier Member

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    Yeah that's no joke. My next house WILL have a lift in the garage and even still I'll be doing less of the heavy work. Too hard on the joints.
     
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  13. Desert Flier

    Desert Flier Member

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    OK so this mystery continues. I borrowed a neat tool which allows me to clamp microphones in various places on the suspension and listen to the various channels. The mics that were clamped anywhere near the right front caliper were without out a doubt the loudest. Painfully loud actually. Virtually no noise coming from the driver's side. That was the closest stationary point I could really clamp onto next to the outer CV joint. I could also hear the banging on the left caliper as well but it was hardly audible so I figured it was just reverberating through the transmission from the other side. I have since changed out the right CV joint with a new unit from NAPA and I'm still having the same sounds albeit a little less frequently. So why less frequently? I'm trying to think of things I removed and reinstalled in the process (outer tie rod, strut to knuckle, strut to sway bar link, brake caliper). Somehow in the process I've perhaps lessened the frequency of the noise but definitely not eliminated it. So I'm ruling out the axles and looking more into the calipers. I'm not quite sure how the caliper could make these sounds so I'm still researching. And I've learned that I can make the noise simply by rocking the car from drive to reverse with a little momentum (if you've ever been stuck in the snow you'll know what I mean). When I have time I'm going to use the microphones again and focus more on the caliper and control arm and see if I can isolate it any further.
     
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  14. mlsimmons

    mlsimmons Junior Member

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    did you find a solution to the problem?
     
  15. TheLastMojojomo

    TheLastMojojomo Active Member

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    I have had this exact same problem. It happened 2 separate times on my 09 Gen 2 Prius when I replaced the drivers side and passenger side CV Axels. I even ordered another CV Axel the first time I experienced this clicking with the driver's side because I thought it was bad, but the new one I ordered did the exact same thing. I also ordered a different brand of axel half shaft when replacing the passenger side and it still did it. It would seem that they all do it for whatever reason.

    What I found eventually fixed this ticking/ clunk noise was long 45 minute freeway trips at 70+ mph or so. After a couple days in a row of doing this the ticking stopped. Very infrequently now, I'll still experience a very watered down muffled clunk/tick. It's almost inaudible but you can still feel something catch a little upon braking. It only happens like .01% of the time now. Who knows what causes it.

    Also, I'm a mailman and became very aware of this noise. My route is a 106 miles with over 400 starts and stops. I would experience the tick almost every time I stopped and started from a mailbox. This went on for about a month with the ticking and actually seemed to get worse at first. I started experiencing a double clunk/tick when decelerating. I had the mechanics who replaced the first one look at it twice and they couldn't find anything wrong so they said keep driving and see what happens. It just kept happening and became used to it after a few weeks. During this time I only used my prius for my local mail route and local commuting. What changed was I started helping out at a Post Office about an hour away that included a 45 min highway trip at 70+ mph. After two days in a row of this the clicking noise was greatly reduced. After 3 days it was essentially gone and stayed that way. 10,000 miles later I replaced the passenger side CV Axel myself and the exact same ticking noise came back. A couple of long highway trips fixed it again at 70+ mph worked. It seems anything slower than that doesn't work. I went on several 30 minute 60 mph trips before the 70+ mph trips and it didn't do a thing for the ticking noise. But once I got the longer 70+ mph trips in, the noise disappeared for good and neither axel makes a tick except for .01% of the time.

    Posted via the PriusChat mobile app.
     
    #15 TheLastMojojomo, Sep 9, 2020
    Last edited: Sep 9, 2020
  16. Desert Flier

    Desert Flier Member

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    That is really odd. What you describe is exactly what I am experiencing. I even changed the passenger side axle since that's where the microphone picked up the noise the loudest. The sound was back within a stop or two. Like you I even changed brands and went with NAPA this time. No difference. Usually one clunk when stopping and another when starting. Sometimes a double clunk. I found that I can duplicate the sound by rocking the car back and forth between reverse and drive as long as I have a little momentum when changing directions. Sounds just like someone smacked the end of the axle with a metal hammer. With all the covid stuff I haven't been able to trouble shoot it lately. Haven't taken any real long freeway speed rides though. Glad that worked for you but can't imagine why it worked haha.
     
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  17. Desert Flier

    Desert Flier Member

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    I have not yet. Mostly due to the craziness of Covid and it also being 110 degrees every day in Phoenix. I will find it eventually haha.
     
  18. TheLastMojojomo

    TheLastMojojomo Active Member

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    I also could rock it back and get it to clunk/tick by switching between drive and reverse. It's how I showed the mechanic the problem the first time. They were just as perplexed as I was. The noise is really loud so I know what you mean about the metal hammer smacking the axel end. You can feel it reverberate through the frame of the car.

    I have no idea why highway trips fixed it either, but I have a theory. It might have something to do with the centripetal force acting on the axel and transmission at high speeds that somehow helps align whatever is clunking.

    I would try and get it on a few long high-speed trips for a few days and see if that works in fixing the clunking. If you ever get around to doing that let me know if it works. This is the first time I've seen someone on this forum who's had this same problem.

    Posted via the PriusChat mobile app.
     
  19. Desert Flier

    Desert Flier Member

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    I'll definitely give it a try sometime and will keep the post updated. Thanks!
     
  20. JoshS

    JoshS New Member

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    Any update on this? My 2009 Toyota Prius with 180k miles just started doing this. I use the vehicle for Lyft/Uber on weekends so it sees a quite a bit of stop lights. Over the past few months I've done struts, control arms, ball joints, stabilizer links, brake pads, spark plugs, coolant, ATF fluid, and outer tie rod ends. I've noticed that it occurs on starts and stops between 0-10mph. Lately, after quite a bit of usage I've been hearing the noise when I press on the brake at 35-45 mph. Toyota says my vehicle doesn't have any open recalls but I'm curious if this noise has anything to do with steering intermediate shaft.