E. Long
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• Subscriber since 1/1/2001 |
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• Atlanta, GA, USA |
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• Registered on 1/23/2001 |
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• 2,229 posts |
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 Posted:7/12/2005 15:55 |
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| Quote: | Welll much to my dismay, my ride up to Northern Michigan was terrible. The shake that was in my truck before I installed the new tires is still there  The tires look nice, so I'm glad I put them on, but the shaking has got to stop. I talked to my mechanic and he's thinking that maybe it's the driveshaft out of balance. I can't get over 70mph without shaking (not so much that you can't drive, but enough to drive me crazy). He suggested jacking up the back end and running it up to speed to see if it still shakes. He also mentioned a possible bent axle shaft...but I'd think that something would have to cause that as opposed to slowly appearing over time. Anyone else ever had this shaking that they can't get rid of? |
Do you have a clunking sound come from the rear when you start moving from a dead stop? How about when you shift from Reverse to Drive (or vice versa)? If so, then you've got a bad u-joint, and this will most certainly cause vibrations while driving. If not, then your driveshaft may have lost a weight and needs to be rebalanced.
I highly doubt a rear axle shaft is bent. Do you do any towing? Do you have a chip installed? You need some serious traction and a lot of torque to twist/bend an axle -- I just don't see this happening under regular driving conditions.
The slip yoke may be seized on the rear drive shaft. As the suspension flexes as higher speeds on the highway, you'll notice a vibration because the driveshaft cannot extend or compress with the suspension due to a seized slip yoke.
-Eric
'67 Galaxie 500 - 390 FE, .030" over, FE to AOD adapter, disc brake conversion. The Daily Driver.
'00 Excursion - 7.3L PSD, LANDYOT Gen-II Radius Rods, Factory Tech Valve Body, 200K+ miles and going |
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Matt Cawson
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• Caledonia, MI, USA |
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• Registered on 10/20/2004 |
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• 82 posts |
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Posted:7/12/2005 18:41 |
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| Quote: | | Quote: | | Welll much to my dismay, my ride up to Northern Michigan was terrible. The shake that was in my truck before I installed the new tires is still there The tires look nice, so I'm glad I put them on, but the shaking has got to stop. I talked to my mechanic and he's thinking that maybe it's the driveshaft out of balance. I can't get over 70mph without shaking (not so much that you can't drive, but enough to drive me crazy). He suggested jacking up the back end and running it up to speed to see if it still shakes. He also mentioned a possible bent axle shaft...but I'd think that something would have to cause that as opposed to slowly appearing over time. Anyone else ever had this shaking that they can't get rid of? |
Do you have a clunking sound come from the rear when you start moving from a dead stop? How about when you shift from Reverse to Drive (or vice versa)? If so, then you've got a bad u-joint, and this will most certainly cause vibrations while driving. If not, then your driveshaft may have lost a weight and needs to be rebalanced.
I highly doubt a rear axle shaft is bent. Do you do any towing? Do you have a chip installed? You need some serious traction and a lot of torque to twist/bend an axle -- I just don't see this happening under regular driving conditions.
The slip yoke may be seized on the rear drive shaft. As the suspension flexes as higher speeds on the highway, you'll notice a vibration because the driveshaft cannot extend or compress with the suspension due to a seized slip yoke. |
No clunking sound Eric. I climbed under there and both front and rear u-joints look/feel to be in good shape. Don't pull anything (other than really small stuff), and I drive that thing like a baby. Hopefully you're right about the weight on the drive shaft. I could probably look and see where one used to be if that is the case. No chip either. Totally stock, except for the larger tires and some interior stuff. Going in for the pulling issue tomorrow morning, I'll have him check the driveshaft and u-joints while it's in. Then it's back to the tire shop so he can check the tires. |
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Jukka Heikkila
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• Helsinki, XX, Finland |
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• Registered on 7/30/2004 |
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• 25 posts |
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Posted:7/18/2005 07:18 |
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Hi Matt
A late reply to your question about Nokian tyres.
Nokian Renkaat is the name of the company, listed in Helsinki stock exchange. Not owned by other company. Defenitely the best winter tire that you can find.
This Vatiiva I have not heard about, but I found it from Nokian US-net page.
WR SUV or Hakkapeliitta SUV, that comes with studs are made in Finland and might be expensive over there, but Hakkapeliitta LT looks like the ones I have in several trucks here.
If you don't mind the hassle of changing the tyres every autumn and spring, this is the choise. These are NOT summer tyres. But if you have a lot of snow and icy roads, these keep you on the road - not on the side of the road.
http://www.nokiantyres.com/ts_size
Jukka from Finland - most of the miles on snow. |
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Eddie Henson
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• Cordova, TN, USA |
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• Registered on 12/8/2004 |
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• 122 posts |
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Posted:7/18/2005 13:46 |
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| Quote: | | Welll much to my dismay, my ride up to Northern Michigan was terrible. The shake that was in my truck before I installed the new tires is still there The tires look nice, so I'm glad I put them on, but the shaking has got to stop. I talked to my mechanic and he's thinking that maybe it's the driveshaft out of balance. I can't get over 70mph without shaking (not so much that you can't drive, but enough to drive me crazy). He suggested jacking up the back end and running it up to speed to see if it still shakes. He also mentioned a possible bent axle shaft...but I'd think that something would have to cause that as opposed to slowly appearing over time. Anyone else ever had this shaking that they can't get rid of? |
Hey Matt,
Is the shaking you are feeling at highway speeds, or is it noticeable all the time? Check the torque on your wheel lug nuts. I believe the torque is supposed to be 165 ft/lbs. If it is not correct, you may have warped rotors and need to have them turned. Also, you may want to check to make sure your calipers move freely. If one or more are binding, that may be causing your problem. Just food for thought. Hope you get the problem solved soon  
Eddie Henson
2000 Ford Excursion XLT 7.3L PSD
203 degree Thermo; Factory Tech valve body; CCV mod; HX mod; Rancho RS9000 shocks; Shimmed FPR @ 67; Walker BTM; Evans NPG Coolant; Dieselsite Coolant Filter Kit; Dieselsite Heater Shutoff Valve; Zoodad Mod; WeatherTech In-channel Visors; Acetoned Badges; PSD Badges; Landyot's Gen II Radius Rods
"If you don't like America, Get the hell out !!" - John Rich |
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ExcursionPSD
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• Milwaukee, WI, USA |
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• Registered on 9/16/2004 |
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• 27 posts |
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Posted:7/19/2005 00:55 |
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Thanks for the information. The North American website is difficult to navigate, but here is the URL for the Nativa tire page.
http://www.nokiantires.com/newsite/tires_popup.cfm?id=36&size=265/75R16
2000 Excursion Limited born 11/99 4x4 Toreador Red ext./gray int. 7.3PSD, 3.73LS, Skidplates, Pwr/Htd TeleMirrors, 6CDchanger, HtdBuckets, LT265/75R16E Bridgestone Dueler A/T Revo, Ford Wraparound deflector, PSDV8 badging, RoofMarkerLights, Tekonsha Sentinel brake cntrlr, PCM=AXD0, WD 65hp chip, WalkerBigTruck Muffler, RS9000, Performance Friction 2 piece rotors/pads, Sylvania SilverStars, Landyot Gen III, Amsoil from MAXoil.com in diffs/trans/transfer 199k miles. |
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Matt Cawson
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• Caledonia, MI, USA |
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• Registered on 10/20/2004 |
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• 82 posts |
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Posted:7/20/2005 19:17 |
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Finally got around to getting some pics of the bus on here. There's a pic of the Vatiiva tires too. Sorry, can't figure out how to put them right here in the forum, you'll have to check it out in my profile. |
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Hooked
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• Vancouver, XX, Canada |
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• Registered on 9/7/2004 |
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• 13 posts |
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Posted:7/21/2005 03:13 |
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The Vatiiva is a great tire. I had them on my Tahoe and will be getting them for my X this fall. Outstanding wet weather traction and very good in the snow. Good treadwear (80,000 kms), and good ride considering it's an 8 ply tire. |
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