sounds like its your rear end or clutch though 
Wheel hop, do I have it?
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Joined: Jul 2005
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From: West Linn, Oregon
Wheel hop, do I have it? Hey everyone I am new here, I have done a few searches without answers to my questions below, and not sure if this is the exact place for this but it includes a bunch of things listed in the description for the section...
I am getting a strange vibration and not sure if it is wheel hop or not...
My entire suspension is stock minus removal of the front sway bar, and the car only has 79K miles...
For the past few thousand miles, about a year, the rear end and rear suspension has been noisy, with a lot of squeeks and creaks while driving or jacking up the car. In this same time frame the rear end started going out and doing single wheel burnouts and spinning on the street. The gap in the wheel well remains about the same with about 4.5 inches from the top of my stock wheel to the bottom of the wheel well so I don't think that springs are sagging...
Recently I have developed this strange vibration when I accelerate hard, and after the 1-2 shift. It feels like I am driving over the rumble strips on the side of the highway. I think this is wheel hop and also due to the single wheel slipping. The strange part is I have felt wheel hope in a lot of other cars and it has never felt like this, it was always a jerking chirp-chirp-chirp and you could feel the rear actually hop.
So is this a strange type of wheel hop or is my rear actually almost completely gone, and causing this?
I am getting a strange vibration and not sure if it is wheel hop or not...
My entire suspension is stock minus removal of the front sway bar, and the car only has 79K miles...
For the past few thousand miles, about a year, the rear end and rear suspension has been noisy, with a lot of squeeks and creaks while driving or jacking up the car. In this same time frame the rear end started going out and doing single wheel burnouts and spinning on the street. The gap in the wheel well remains about the same with about 4.5 inches from the top of my stock wheel to the bottom of the wheel well so I don't think that springs are sagging...
Recently I have developed this strange vibration when I accelerate hard, and after the 1-2 shift. It feels like I am driving over the rumble strips on the side of the highway. I think this is wheel hop and also due to the single wheel slipping. The strange part is I have felt wheel hope in a lot of other cars and it has never felt like this, it was always a jerking chirp-chirp-chirp and you could feel the rear actually hop.
So is this a strange type of wheel hop or is my rear actually almost completely gone, and causing this?
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Joined: Jul 2005
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From: West Linn, Oregon
So I guess your saying that the rear suspension is the cause because it needs to be lubed? I had lubed it about 6 months ago and the sqeeks and creeks didn't change much, I guess I can do it again but I normally do it once a year (I normally put less then 4-5K miles on the car per year)...
I know the rear is going out, but I was trying to figure out what this vibration was. I don't really have the money to throw at the car and hope that was the cause, I know I need suspension and a rear, but no way can I afford both right now. It would also suck to spend $1000 for rear suspension to find that the vibe was the rear telling me it was about to give up completely, or vice versa, spend $3k on a rear just to find I stll can accelerate because the the suspension is toast...
I know the rear is going out, but I was trying to figure out what this vibration was. I don't really have the money to throw at the car and hope that was the cause, I know I need suspension and a rear, but no way can I afford both right now. It would also suck to spend $1000 for rear suspension to find that the vibe was the rear telling me it was about to give up completely, or vice versa, spend $3k on a rear just to find I stll can accelerate because the the suspension is toast...
Joined: Oct 2005
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From: Holland Twp/Milford, New Jersey
Dude, to me that sounds like your clutch is slipping. It'll do that under hard acceleration. You're probably losing your diff. as well, but it definitely sounds like clutch rattle.
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Joined: Mar 2005
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From: Brighton, MI
Originally Posted by BeachZ
The single wheel burnout part makes me think your posi is on the way out.
I never thought of it as running over a rumble strip, but that is exactly the feel I get w/ my F150, and it's definitely the posi-rear. It's at it's worst when turning and moderate acceration.
Now my ignorance... how hard is it to inspect the diff?
And you mentioned removing the sway bar... you did put one back on?
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Thread Starter
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From: West Linn, Oregon
Well the A4 doesn't have a clutch, so I guess this narrows it down to the rear...
I haven't had a chance to do a burnout, living around a big city that cops crack down on racing it's hard to do that... But I do accelerate hard from lights, and today I was coasting to the light and I was the first car, and it turned grean and I nailed the gas, i know it was spinning, and I really felt that vibe and it was quite fierce, and definitely felt like wheel hop so I think it spun both a little...
I haven't had a chance to do a burnout, living around a big city that cops crack down on racing it's hard to do that... But I do accelerate hard from lights, and today I was coasting to the light and I was the first car, and it turned grean and I nailed the gas, i know it was spinning, and I really felt that vibe and it was quite fierce, and definitely felt like wheel hop so I think it spun both a little...
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From: Brighton, MI
Originally Posted by 1SlowFormula
Well the A4 doesn't have a clutch, so I guess this narrows it down to the rear....
Sorry that I don't know more about rear diffs. It may be as easy as trying to change the oil in it.
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From: West Linn, Oregon
Originally Posted by ZeeVert
Not trying to be a smart-*** (maybe a little)... but autos actually have several clutch packs in them. It is possible that one or more of them is slipping, but unlikely.
Sorry that I don't know more about rear diffs. It may be as easy as trying to change the oil in it.
Sorry that I don't know more about rear diffs. It may be as easy as trying to change the oil in it.
I guess I should have mentioned some of the things I know is wrong with the rear, since I am new here you guys should be brought up to speed...
Well the fluid is only about 10K miles (2yrs) old, and I had the limited slip additive put in when I did that. I needed to change it while on a trip to Florida, because somewhere in Georgia it started whinning, clunking, and acting up. The clunking was due to a broken tranny mount from screwwing around earlier launching in trafic due to the stop and go hell getting into VA from DC. The rear on the other hand had a little metal in there and I wasn't sure where it was from, and a lot of guys said that the clutch packs in the rear could be going out so I just dismissed it and started to save for the rear to be replaced...
Then about a year later I started getting a seriously bad grinding noice when making a left hand turn, found that that axle was shifting out a little and grinding the rotor on the caliper, I made a few shims and shimed out the caliper bracket to stop this and came to the conclusion that the C-clip on that side is wearing down causing the axle to move a little. I guess I found where that metal inthe fluid came from...
Then then a few months ago, about another year later, the posi has not been holding. I could only feel and see one wheel spinning from time to time, this had progressively gotten worse...
All this tells me I need to replace my rear, so that I know that, I just can't afford it right now. But out of no where this vibration started, and I am trying to verify if it is the rear or wheel hop...
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Wow, very welcoming.
Thread Starter
11 Second Club
Joined: Jul 2005
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From: West Linn, Oregon
holy crap, boy was this an old thread. When I first saw it and saw that I started it, I was wondering who stole my username, then realized it was a few years old...
Glad you got your answer Arrison24, at least you were searching, that's a good start, best of luck...
Glad you got your answer Arrison24, at least you were searching, that's a good start, best of luck...
i know on my stock car, it only had about 75,000 on it at the time but the stock bushings in the LCA's were completely shot especially the passenger side. i replaced them with some aftermarket LCA's and it cleared up a lot of problems i was having, less tendency for wheelhop for one thing