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Pilot::Clinical Rounds Routine maintenance, problems, solutions and repair

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  #1  
Old 10-01-2006, 01:54 PM
GriffinGirl GriffinGirl is offline
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Default Another symptom of rear diff problem?

Okay, so my husband and I are looking at a '03 MDX, and realize this isn't an Acura forum, but hey, they all come from the same place and you all have a lot of useful help!

So, we test drove a potential buy from an individual, and think there is a prob with the rear dif from what we are reading, however when we are turning the steering wheel rocks back intermittently, pulling back to center. It is not the assisted power steering, its someting else and we are wondering if it is tied to the rear dif problem. Has anyone heard of this?

Thanks everyone!
Tiffany
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  #2  
Old 10-01-2006, 02:59 PM
Fox Fader Fox Fader is offline
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Why do you say it's not the power steering? Sounds like a weak PS pump. Also not sure if this vehicle has a PS pressure control switch (can't remember the exact name), it may be bad.
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  #3  
Old 10-01-2006, 03:05 PM
GriffinGirl GriffinGirl is offline
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Sorry, I meant to say "we don't think it is the power steering after reading about all the problems with the rear dif".

My husband owns a Jeep with locked differentials and he was thinking it "makes sense" that it is related to the rear dif and not the steering. But we dunno!

Is it possible the rear dif probs can cause the jerking in the stearing?
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Old 10-01-2006, 03:23 PM
Fox Fader Fox Fader is offline
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Quote:
Originally Posted by GriffinGirl
Is it possible the rear dif probs can cause the jerking in the stearing?
It's possible, but I think the MDX has a different rear-end system altogether so I can't relate to how it operates. I've owned many RWD cars and never have I had a rear-end problem that cuase this type of steering issue. Nevertheless, if it is a rear-end problem I'd stay away, it could turn out to be a costly repair. Focus on the PS some, I got a feeling it's there.
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  #5  
Old 10-02-2006, 01:47 AM
pilotjoe pilotjoe is offline
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Quote:
Originally Posted by GriffinGirl
Sorry, I meant to say "we don't think it is the power steering after reading about all the problems with the rear dif".

My husband owns a Jeep with locked differentials and he was thinking it "makes sense" that it is related to the rear dif and not the steering. But we dunno!

Is it possible the rear dif probs can cause the jerking in the stearing?
Yes.
Sounds like the rear differential (VTM-4) fluid is contaminated.
There is a Technical Service Bulletin for the MDX regarding this problem.
Replacing the contaminated fluid will normally solve the problem.
However, I would have an Acura tech look at it if there has been any damage done to the rear differential as a result.
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Old 10-02-2006, 05:44 AM
GriffinGirl GriffinGirl is offline
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So, it sounds okay to purchase this vehicle because both issues (PS and rear dif) are fairly easy...for my husband to fix. Just something to negotiate with the seller.

I really appreciate the replies!

Thanks guys!
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  #7  
Old 10-02-2006, 07:20 AM
GriffinGirl GriffinGirl is offline
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Okay, so I called the dealership as well.... they think it is the rack and pinion ($420 for part) and of course suggested the flushing of the rear dif and the transfer case...$78 and $83 respectively. I asked, just in case, what the cost of the rear dif assembly would be, not labor, $2200! WOW So, anyway, just thought I would throw that out there in case anyone does a search on COST or PRICE of parts...'cause I did!

Thank god my husband can do all this! So now, we have to really start negotiating down the asking price of my perspective MDX. Wish me luck! :P
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  #8  
Old 10-02-2006, 08:03 AM
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I'm siding with Fox about this one, maybe low PS fluid or maybe it's even just a loose drive belt on the PS pump. I had thought of a bad tire with a separation, but you'd have felt that at speed.

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Old 10-02-2006, 05:26 PM
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Default Is it a rear diffferential problem?

I had the same symptoms with my 02' MDX.
Luckily it was just a contaminated vtm-4 fluid as Pilotjoe indicated.
The dealership had to drain and refill the rear differential fluid 3X until the juddering and steering noise was gone.
I've attached the Technical Service Bulletin from Acura for your reference.
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  #10  
Old 10-02-2006, 10:06 PM
butterfly butterfly is offline
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Default Re: Is it a rear diffferential problem?

Quote:
Originally Posted by butterfly
I had the same symptoms with my 02' MDX.
Luckily it was just a contaminated vtm-4 fluid as Pilotjoe indicated.
The dealership had to drain and refill the rear differential fluid 3X until the juddering and steering noise was gone.
I've attached the Technical Service Bulletin from Acura for your reference.
Here's the link: http://www.alldata.com/tsb/Acura/114...04-023/41.html
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