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Hearing Strange Noise From Engine Compartment

Discussion in 'Early CJ5 and CJ6 Tech' started by mickeykelley, Oct 28, 2018.

  1. Oct 31, 2018
    Jrobz23

    Jrobz23 Member

    Northern, WI
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    821
    I found a maglight this way I once left on the skid plate a year prior LOL.

    Driving.. rattle rattle.. hmm what's that.. rattle rattle.. checks it out.. THAT'S WHERE IT WENT!!
     
    Hellion, Dave Deyton, Glenn and 3 others like this.
  2. Oct 31, 2018
    termin8ed

    termin8ed I didn't do it Staff Member

    Mason, MI
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    You have no idea how many times ive gotten a waranty rattle work order only to find the plate was flapping:banghead:
     
    Focker likes this.
  3. Oct 31, 2018
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    I used that term once......only once.!

    I did recently replace the glove box with one of John's new cardboard ones and the grandson was crawling around in the jeep that time. Had an original 60 year old glovebox screw go missing. He said he didn't eat it so maybe that it? Nothing else missing that I know of.
     
    Last edited: Oct 31, 2018
  4. Nov 1, 2018
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    I have a ringy-rattle type noise from up front.
    It is the D-rings I have hanging from the mounts for the towbar I do not have. I use them for recovery connections for cables, ropes or chains depending on what I am pulling from the front while the tranny/tc is in reverse, low-range 4 wheel drive.
     
  5. Nov 21, 2018
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    I've been trying to pinpoint the noise. Not engine as l've tried running up the rams and never hear it. Tried coasting and don't hear it. Don't find anything banging the drive train. It sounds like coming from the back of the engine down low. I've made sure it's not the floor pans. It's not there until things warm up good. I'm beginning to think its the throw out bearing so I describe it to a guy who works at a tranny place and he said sounds like throw out before I even mentioned my suspicions. I've got an appointment first week of December to see. Can you tell anything by looking through the inspection plate on the top of the bell housing?
     
  6. Nov 21, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    The throwout bearing should not make any noise if it's not engaged, as in pushing on the clutch pedal to disengage the clutch.
     
  7. Nov 21, 2018
    Hellion

    Hellion Banned

    Eastern TN
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    I think the time has come for you to post a video of the sound; yes I must agree (with myself). :D
     
  8. Nov 21, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Transfer case shift levers loose? Those can rattle if they don't have the little clips holding them snug.
     
  9. Nov 22, 2018
    Dave Deyton

    Dave Deyton Member

    Fuquay-Varina, NC
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    I thought I was only one who heard phantom noises after working on a vehicle. Fixed some rust under the spare tire carrier on my dad's Blazer, then went four wheeling at the beach. 2 weeks later, getting new tires, I pulled my ratchet with and extension and socket off the rear bu.mper mounting nut. How it stayed on I will never know.
    These posts are getting me reved up to get back to work on my projects (one at a time of course).
     
    Glenn likes this.
  10. Nov 22, 2018
    PeteL

    PeteL Member 2020 Sponsor 2019 Sponsor

    Hills of NH
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    True, but see my post #14. T/o could be dragging slightly, and has become damaged. Pushing the pedal silences it.
     
    Glenn likes this.
  11. Nov 22, 2018
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Definitely agree. I had actually started to mention that but changed what I was writing. Another thought is the little return spring....is it on or is it missing? Should be noticeable in the pedal "feel" however.
     
  12. Nov 22, 2018
    tcfeet

    tcfeet Member

    east of west,...
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    I had a noise like that, liked to have drove me nuts.[maybe it did]. One day I yanked the park brake
    handle and released it, no more noise. It was something in the park brake drum that was loose I suppose.
    I had thought it was clutch springs .
     
  13. Nov 22, 2018
    Alan28

    Alan28 Well-Known Member 2020 Sponsor 2019 Sponsor

    Ch√Ętillon en...
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    Noise in a car is always interresting.
    It reminds me a travel from Frankkfurt to Munich, in a top new BMW Bavaria.
    The BMW with Bavaria brand was the top of the top from this factory.
    The owner was a partner, owning a factory near Munchen, very proud of being Bavarian. He was right of course.
    The place is so nice, all is clean and beautiful. People wear bavarian costumes. There is Oktober fest.
    Well, this BMW, written Bavaria at the back, was very nice, full speed on German highway, and there was a strange noise, a small shock, every 2 or 3 minutes.
    At the end they stop, look around the car... this was a tyre which was loosing parts, like a puzzle, brand was Continental, Bavarian I suppose.
    All Bavarian passengers became grey, shame and risk at the same time, risk to have a spy onboard!
    At high speed, the result was probably death for all. That was before 1980, there was no protection like nowaday.
    Morality : a small noise car become a big problem.
     
  14. Nov 22, 2018
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    I'll try to record it but that may not come out well on recording with all the normal jeep noises. Like I mentioned earlier, I'm one of those people that truly has selective hearing and unusual car noises is my specialty. It is definitely only after everything heats up, definately not engine (based on engine revving and holding it at standstill), definately somewhere around lower rear of engine block/bell housing/floor pan area by firewall and MOST DEFINITELY not my imagination. Initially only I could hear it, but now wife is able to detect it too. But the sound is not as noticeable as it was before. Would a TO be temperature and rpm sensitive?
     
  15. Nov 22, 2018
    fyrmn

    fyrmn Member 2020 Sponsor 2019 Sponsor

    High Desert AZ
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    I have a similar issue, growling noise, usually can make it go away by pumping the clutch. Right now doesn't affect performance and it is intermittent.
    Because this vehicle sat so long in a wet climate I suspect t/o bearing or pilot bearing.
     
  16. Nov 22, 2018
    Dave Deyton

    Dave Deyton Member

    Fuquay-Varina, NC
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    Had an old 70 Beetle I drove for years. I borrowed a friends pickup to haul some stuff and he drove the VW. When we traded back he said, "Man that thing makes all kinds of creaks cracks, and clunks." I said, that's why it has a good radio." I told him to turn up the radio and keep on driving. It sure did make a lot of noise but never gave up.

    Dave
     
  17. Nov 22, 2018
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2020 Sponsor 2019 Sponsor

    cordele, Ga.
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    The 58 Willys has a short spring inside the bell-housing to hold the throw-out bearing back. Look inside from the inspection cover to see if it is still attached.
     
    Lockman likes this.
  18. Nov 22, 2018
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    Here is the video. Once it warms up, I can hear it under 2000 rpm. Once I got home, I opened the hood and I'd swear it's coming from the dead middle of the engine now. I'm thinking next week I'm going to call the engine rebuilder and tow it over for him to listen to.

     
  19. Nov 22, 2018
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    I know the spring was on at one point before I put the floor pans back on. But I might check it again.
     
    Walt Couch likes this.
  20. Nov 22, 2018
    PeteL

    PeteL Member 2020 Sponsor 2019 Sponsor

    Hills of NH
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    If that's the case I hope you have tried a stethoscope (or a screwdriver, or dowel) which can easily locate the noise precisely
     

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