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Vibration Under Acceleration


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#1 T5wagon1717

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Posted 01 September 2009 - 03:05 AM

Hey,

So, I have this vibration under acceleration. Its not the wheels or anything, it only happens under acceleration, especially at lower rpm, but it does it under higher power too. Its pretty violant though. I really don't know what it could be.
CV joints?
I did the top stabilizer mount last week, which did help, but needed to be replaced anyway.
99 S70 glt.
I hope this isn't harming the car in anyway.
Thanks.

~Teal
1997 855 T5. 16T, japanifold, ipd turboback, ipd stage 1, Hallman pro rx (17psi), ipd intake, Sconeman intake pipe, fremax brakes, 18" vectors/16" mimas, B&M tranny cooler, tinted angel eyes,10000K hids, tint, rallitek boost gauge, greddy turbo timer, sirius sportster 5 + ipod hookup, Valentine 1 Radar.....



#2 michael-s70

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Posted 01 September 2009 - 04:13 AM

how many miles? 99% of the time its cv joints going out when you accelerate and it vibrates, get em done soon. waiting will cause you more harm than doing it asap.

maybe should be moved to maintenance.... :huh:
00 S70 GLT, 98 S70 T5M, 91 760 TURBO, 98 S70 N/A, 96 850R
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#3 T5wagon1717

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Posted 01 September 2009 - 06:39 AM

alright.
Are they that difficult to do, I noticed on ipd they were like 175 each with an axel. I just replaced an axel and both tie rods last month.
Any tips on picking these bad boys up?
1997 855 T5. 16T, japanifold, ipd turboback, ipd stage 1, Hallman pro rx (17psi), ipd intake, Sconeman intake pipe, fremax brakes, 18" vectors/16" mimas, B&M tranny cooler, tinted angel eyes,10000K hids, tint, rallitek boost gauge, greddy turbo timer, sirius sportster 5 + ipod hookup, Valentine 1 Radar.....

#4 DonutsDemise

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Posted 01 September 2009 - 06:49 AM

alright.
Are they that difficult to do, I noticed on ipd they were like 175 each with an axel. I just replaced an axel and both tie rods last month.
Any tips on picking these bad boys up?


figure out which one has a problem if it is the problem. an empi axle from fcpgroton runs $110. raxles run $150. ipd axles are solid but you can get good axles cheaper. do you hear snap crackle pop at all? noises are common with failing cv joints. maybe an axle is bent or something. before you go spending money figure out the problem though. it very well could be an engine mount (much cheaper). whatever it is, the jobs aren't complicated.
2005 Volvo S60 R 6-speed 103k
1998 Volvo S70 T5M 196k
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#5 T5wagon1717

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Posted 01 September 2009 - 07:14 AM

figure out which one has a problem if it is the problem. an empi axle from fcpgroton runs $110. raxles run $150. ipd axles are solid but you can get good axles cheaper. do you hear snap crackle pop at all? noises are common with failing cv joints. maybe an axle is bent or something. before you go spending money figure out the problem though. it very well could be an engine mount (much cheaper). whatever it is, the jobs aren't complicated.

It makes a clunk kind of thing from going from park to reverse.
but mainly no noise, just shaking under acceleration.
How would I know which thing it is??
1997 855 T5. 16T, japanifold, ipd turboback, ipd stage 1, Hallman pro rx (17psi), ipd intake, Sconeman intake pipe, fremax brakes, 18" vectors/16" mimas, B&M tranny cooler, tinted angel eyes,10000K hids, tint, rallitek boost gauge, greddy turbo timer, sirius sportster 5 + ipod hookup, Valentine 1 Radar.....

#6 DonutsDemise

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Posted 01 September 2009 - 07:18 AM

It makes a clunk kind of thing from going from park to reverse.
but mainly no noise, just shaking under acceleration.
How would I know which thing it is??


then I am putting my money on an engine mount or the torque rod on the transmission
2005 Volvo S60 R 6-speed 103k
1998 Volvo S70 T5M 196k
1995 Volvo 855 NA 5-speed 200k+

#7 T5wagon1717

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Posted 01 September 2009 - 07:33 AM

I did the top engine mount.....how bad is the a bad torque rod?
I did just do a tranny flush, the fluid wasn't too bad, but it needed it. Mainly it just shakes under slow acceleration.
1997 855 T5. 16T, japanifold, ipd turboback, ipd stage 1, Hallman pro rx (17psi), ipd intake, Sconeman intake pipe, fremax brakes, 18" vectors/16" mimas, B&M tranny cooler, tinted angel eyes,10000K hids, tint, rallitek boost gauge, greddy turbo timer, sirius sportster 5 + ipod hookup, Valentine 1 Radar.....

#8 Boost_Junky

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Posted 01 September 2009 - 03:16 PM

Sounds like the axles. If you coast and it doesn't vibrate then it could be mounts and/or axles. The front mount near the accessories belts can cause vibration too. So can the firewall mount. But vibration under low acceleration sounds like the axles.

Good luck

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#9 T5wagon1717

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Posted 02 September 2009 - 10:40 PM

Yeah, I had my tie rods replaced about 3 months ago, and they replaced the right axel when they did that cause the boot was broken.
IDK, the boot is leaking a little on one of the cv joints, so I'm thinking it could be that.
Would these be ok joints?
http://cgi.ebay.com/...s#ht_1348wt_941

Thanks,
~Teal
1997 855 T5. 16T, japanifold, ipd turboback, ipd stage 1, Hallman pro rx (17psi), ipd intake, Sconeman intake pipe, fremax brakes, 18" vectors/16" mimas, B&M tranny cooler, tinted angel eyes,10000K hids, tint, rallitek boost gauge, greddy turbo timer, sirius sportster 5 + ipod hookup, Valentine 1 Radar.....

#10 T5wagon1717

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Posted 03 September 2009 - 09:24 PM

This is my dd, so is it bad driving with bad cv joints with a vibration?
1997 855 T5. 16T, japanifold, ipd turboback, ipd stage 1, Hallman pro rx (17psi), ipd intake, Sconeman intake pipe, fremax brakes, 18" vectors/16" mimas, B&M tranny cooler, tinted angel eyes,10000K hids, tint, rallitek boost gauge, greddy turbo timer, sirius sportster 5 + ipod hookup, Valentine 1 Radar.....

#11 Gilhuly

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Posted 06 September 2009 - 03:43 PM

My money is also on the engine mount on the pass side just inside the skirt. Does not sound like axles to me.

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#12 T5wagon1717

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Posted 08 September 2009 - 04:45 AM

My money is also on the engine mount on the pass side just inside the skirt. Does not sound like axles to me.


I'm gonna agree with you there. The tie rods are new, and the cv joints look brand new with no leaking. However, my steering rack boost is leaking, and has some grease kicked up under the car, but that wouldn't effect the acceleration.
So, engine mount it is.
1997 855 T5. 16T, japanifold, ipd turboback, ipd stage 1, Hallman pro rx (17psi), ipd intake, Sconeman intake pipe, fremax brakes, 18" vectors/16" mimas, B&M tranny cooler, tinted angel eyes,10000K hids, tint, rallitek boost gauge, greddy turbo timer, sirius sportster 5 + ipod hookup, Valentine 1 Radar.....

#13 lcc014

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Posted 18 September 2009 - 01:46 PM

If axle is bad, how to determine which one is bad ? My car recently also have vibration under low speed acceleration, not all the times but can be felt during the long traffic jam (stop and go) condition. Otherwise, no vibration at all. It feel like when the tranny is in 2nd or 3rd gear during the acceleration. Regular cursing speed, no vibration at all. I checked the CV boots, no leak. I will check all the engine mounts. My car's axles are still the original set and the mileage of the car is about 217k miles.

Any suggestion is appreciated.

Thanks,

Ching-Ho Cheng
1995 855 NA: Bilstien Touring Strut & Shocks, Volvo Protective Grill, K&N Filter, E-Code Lens, ClearCorner Light, Alpine CD-Changer, AutoDim RearView Mirror, 6000K HID, Tranny Cooler
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#14 lcc014

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Posted 19 September 2009 - 11:29 AM

Update: I looked at the both axles this morning and saw that the driver side outer CV boot is ripped apart. It looked like that not much grease is left inside the CV joint. I will either replace the CV boot or replace the whole axle.

Ching-Ho Cheng
1995 855 NA: Bilstien Touring Strut & Shocks, Volvo Protective Grill, K&N Filter, E-Code Lens, ClearCorner Light, Alpine CD-Changer, AutoDim RearView Mirror, 6000K HID, Tranny Cooler
2005 530i: PPP, CWP, Nav, Xeon, Rear SunShade, Steptronics, Blue Light Door Sills, Wide Angle Driver Side Mirror, M5 iDrive Knob, White LED License Plate Light

#15 VolvoRine

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Posted 20 September 2009 - 03:13 AM

Ha! I just replaced the right axle (empi) and the wheel bearing on my 96 850R cuz the cv boot was ripped, however I changed them like 2 weeks ago, oh i forgot to mention I did an aligment after the installation, and i'm having the same problem ( vibration from low to mid rpm's) as the mate that is asking for advice, the next thing that i'm gonna check might be the lower mounts and possibly the subframe mounts, unless someone else suggests something else....

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#16 lcc014

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Posted 20 September 2009 - 11:48 AM

Ha! I just replaced the right axle (empi) and the wheel bearing on my 96 850R cuz the cv boot was ripped, however I changed them like 2 weeks ago, oh i forgot to mention I did an aligment after the installation, and i'm having the same problem ( vibration from low to mid rpm's) as the mate that is asking for advice, the next thing that i'm gonna check might be the lower mounts and possibly the subframe mounts, unless someone else suggests something else....

So in your case, the vibration was not from the CV nor the wheel bearing. I had CV boot ripped apart before (passenger side) but did not have any vibration back then. So most likely, the replacement of the axle will not solve the problem. I will check engine mount next. I am going to replace the whole driver axle anyway because the axle is the original one, almost 14 years old with about 220k miles on it.

Ching-Ho Cheng
1995 855 NA: Bilstien Touring Strut & Shocks, Volvo Protective Grill, K&N Filter, E-Code Lens, ClearCorner Light, Alpine CD-Changer, AutoDim RearView Mirror, 6000K HID, Tranny Cooler
2005 530i: PPP, CWP, Nav, Xeon, Rear SunShade, Steptronics, Blue Light Door Sills, Wide Angle Driver Side Mirror, M5 iDrive Knob, White LED License Plate Light

#17 lcc014

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Posted 16 October 2009 - 05:49 PM

I'm gonna agree with you there. The tie rods are new, and the cv joints look brand new with no leaking. However, my steering rack boost is leaking, and has some grease kicked up under the car, but that wouldn't effect the acceleration.
So, engine mount it is.

Have you found the source of the vibration yet ? I replaced the driver side axle to fix the ripped CV boot. Vibration still there, I need to check all the engine mount.

Thanks,

Ching-Ho Cheng

Ha! I just replaced the right axle (empi) and the wheel bearing on my 96 850R cuz the cv boot was ripped, however I changed them like 2 weeks ago, oh i forgot to mention I did an aligment after the installation, and i'm having the same problem ( vibration from low to mid rpm's) as the mate that is asking for advice, the next thing that i'm gonna check might be the lower mounts and possibly the subframe mounts, unless someone else suggests something else....

Have you found out the source of vibration yet ?

Thanks,

Ching-Ho Cheng
1995 855 NA: Bilstien Touring Strut & Shocks, Volvo Protective Grill, K&N Filter, E-Code Lens, ClearCorner Light, Alpine CD-Changer, AutoDim RearView Mirror, 6000K HID, Tranny Cooler
2005 530i: PPP, CWP, Nav, Xeon, Rear SunShade, Steptronics, Blue Light Door Sills, Wide Angle Driver Side Mirror, M5 iDrive Knob, White LED License Plate Light

#18 Oreo931

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Posted 16 October 2009 - 06:32 PM

I had the same problem on my 98 XC. It turned out to be a worn lower right engine mount (the one below the timing belt). Changed the mount and the car drives beautifully!

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#19 lcc014

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Posted 16 October 2009 - 06:46 PM

I had the same problem on my 98 XC. It turned out to be a worn lower right engine mount (the one below the timing belt). Changed the mount and the car drives beautifully!

Thanks for the response. I definitely will take a look at that mount.

Ching-Ho Cheng
1995 855 NA: Bilstien Touring Strut & Shocks, Volvo Protective Grill, K&N Filter, E-Code Lens, ClearCorner Light, Alpine CD-Changer, AutoDim RearView Mirror, 6000K HID, Tranny Cooler
2005 530i: PPP, CWP, Nav, Xeon, Rear SunShade, Steptronics, Blue Light Door Sills, Wide Angle Driver Side Mirror, M5 iDrive Knob, White LED License Plate Light

#20 Guest_Nick Walker_*

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Posted 18 August 2011 - 08:20 PM

Hi everyone, I nave just bought a 2002 XC70 with the built in vibrator! The symtoms are very similar to those described. When accelerating gently, vibration is minimal, the harder the acceleration the more pronounced it is. This is the same at all speeds. The vibration is not felt through the steering wheel as much as through the chassis. It does not feel drive train issue, more engine mount. I like the lower engine mount theory. Did you replace it yourself, how difficult, and did it cure the vibration? Thanks Nick Walker, New Zealand






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