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reverse has a rubbing noise

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Old 10-26-2009, 09:36 PM
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reverse has a rubbing noise

only when applying gas. its my sisters 00 4runner 6cyl auto. she told me this is what it does. any ideas what it could be? i havent looked at it yet. thanks
Old 10-27-2009, 04:57 AM
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u-joint?
Old 10-27-2009, 06:42 PM
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its a 2wd thanks though.
Old 10-27-2009, 11:34 PM
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x2 on a u-joint. Get under that 2wd and see if the driveshaft has play in it.
Old 10-28-2009, 04:28 AM
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usually, when there is noise only when backing up... its the rear ujoint.
Old 10-28-2009, 06:07 AM
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cool thanks i feel stupid now. i'll check the drive shaft forgot those had u joints. so if there loose there ineed of replacement?

Last edited by sis004runner; 10-28-2009 at 06:34 AM.
Old 10-28-2009, 07:07 AM
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ok so i went out there i felt no play moveing it side ways but i did feel it at the end where it connects to the ass end of the transmission going up it down but its not where the u joint is its where its inserted in the ass end of the trans just alittle not much. i see where the grease came out on the u joint but not much.
Old 10-28-2009, 07:56 AM
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Old 10-30-2009, 07:41 PM
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no comment?
Old 11-02-2009, 01:18 PM
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i heard it when u step on the gas in reverse it sounds kinda like i deep ping sound like a bell it goes ping ping
Old 11-02-2009, 02:19 PM
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Hmm transmission mount maybe? That looks a little loose for my liking..
Old 11-02-2009, 02:43 PM
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thanks for the quick reply i went out there and the trans feels solid in there. i heard it this morning she said it sounded like it came from the dash area under the car. i thought it came from the exhaust. i rattled the exhaust pipe nothing. right now i dont have the keys could it be the motor mount?
Old 11-02-2009, 02:47 PM
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Don't think its the motor mount. If that where the case then why are you only hearing it in reverse. The pinging noise may be a u-joint. If it clanks before the truck starts moving then that would be my guess. The pining may be metal hitting itself against metal and it will just get sloppier and louder from there on out.
Old 11-02-2009, 02:50 PM
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should i just get the u joints for it then? there like 12 bucks a peice.
Old 11-02-2009, 06:38 PM
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When u checked the u joints, u had it in neutral....right? Sometimes its best to jack it up so u can spin the shaft too.
Old 11-02-2009, 06:48 PM
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no when it was parked. i'll jack it up. thanks
Old 11-09-2009, 06:35 PM
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still havent jacked it up but i heard it myself i heard like a clunk on the rear end. my sister also said that it feels like the transmission slips then catches when u take off. but i also heard a rubbing noise with the clunk in reverse when u step on the gas.
Old 11-20-2009, 07:31 PM
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ok so i think the noise is now comming from the front when u hit bumps i can hear a deep rattle noise comming from under the car right around where the dash is. i looked under the cat i couldnt find anything loose.
Old 11-20-2009, 08:39 PM
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check the steering rack bushings. have your sister turn the truck on and while your looking under there, have her turn the whell side to side. i bet the bushings are worn. that is what my problem was coming from the front. replace with poly bushings $30!!!
Old 11-20-2009, 09:54 PM
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Steering rack bushings are a definite possibility and they're cheap, but unless you DIY it's gonna cost a lot of $$ for the labor (like 2.5 hrs). It could also be the sway bar bushings/end links and they're a lot easier to replace (about 10-15 min. for everything), but all those pieces will set you back about $130-150. Or, it could be all of the above.

And it still sounds like you need to replace the u-joints. It's pretty normal to have all these parts wear out after 10 yrs so welcome to the club, I did all this stuff about 2 yrs ago. BTW, wheelersoffroad.com has poly rack bushings for $16 for the set.


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