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Wagons Subaru Crew Subaru B9 Tribeca Tribeca Chassis Vibration
35 messages, Last post on Aug 24, 2009 at 7:26 AM
You are in the Subaru B9 Tribeca Forum. Your Host is kcram
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I've only got 5K on my '07 but it has a shudder at 47mph +/-3 mph, which it has has since it was new. It feels similar to a rear tire imbalance. I had them re-balanced at the dealer, but it didn't change the effect. It's possible that the tires need to be checked out on a [Hunter] road force balance machine -which my dealer does not have. Or perhaps an out of round rim? Or an imbalance somewhere in the drive shaft? You can only notice it on smooth roads, so it's not a major vibration, but it IS noticeable. It seems to shudder at the same speed, regardless of gear or RPM, and even while coasting. My service adviser (as is typical) is clueless. Any suggestions on what I should tell him to tell the mechanic to look for?
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I have the same issue with the shudder around 47mph, I also get it around 78mph (don't ask). Let me know if you have any luck, I have not. However i do keep bothering them.
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Replying to: n0pa (May 01, 2007 6:50 pm) -mike
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Replying to: paisan (May 02, 2007 3:43 am) My current status: Dealer tried balancing tires: No effect. Dealer tried rotating tires: no effect. Service adviser doesn't know what a road force balance machine is. doesn't understand resonance frequencies, doesn't know if the mechanic has a map of the frequencies and their likely causes, doesn't know if they have an accelerometer setup to measure the frequency. But... he's friendly. It appears as if I'll be living with this for the next 8 years.
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Replying to: morey000 (May 02, 2007 9:46 am) -mike |
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Replying to: morey000 (May 01, 2007 7:59 am)
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Replying to: morey000 (May 03, 2007 1:18 pm)
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Replying to: bdyment (May 04, 2007 3:19 am) Frankly- all the roads around the dealer that we test drove it on were just bumpy enough to make it difficult to really discern the (admittedly) slight vibration. My service adviser took out another new Tribeca for a ride and claimed that it felt the same as mine. I guess this is why the Lexus RX costs $10K more. Not that it doesn't vibrate- but I'll bet they take a calibrated accelerometer for a ride and collect actual vibration magnitude and frequency data. |
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I had a random vibration at about 40-50kmh... Subaru Australia suggested removing the roof racks. I did and the vibration disappeared. At that speed & the wind blowing in a certain direction made the bars resonant & caused a vibration to appear Putting the racks back on this weekend to see what happens
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Replying to: bgriffiths (Nov 04, 2007 9:05 pm) |
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