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Old 06-28-2017, 08:33 PM   #1
tortoisethunder
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Join Date: Jul 2009
Default 2005 Baja Turbo AT (133K miles) mystery vibration

Brand new tires today...
I have a vibration at about 5 to 7 miles per hour. It feels solid at higher speeds. It's like a thumping from the middle of the car to the passenger rear then it goes away. Mechanic checked it out, wheel bearings? couldn't find anything. It is sometimes worse than other times. Also as I slow down you can feel a slight thumping around the same speed? Tires were worn even. I went under the car today and didn't see anything obvious.

Ideas?
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Old 06-28-2017, 08:38 PM   #2
Strider327
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Location: Northern California Hayward
Vehicle:
2004 Impreza WRX
WRB

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Tophats?
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Old 06-29-2017, 08:06 AM   #3
Charlie-III
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Chapter/Region: Tri-State
Location: USA, North NJ, 07456
Vehicle:
1998 Legacy 2.5GT
Silver Sleeper BK, 5MT

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Driveshaft or driveshaft bearings?
Trans mounts?
Any different when turning?
Different in neutral?
Different in a low gear vs. drive?
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Old 06-29-2017, 03:56 PM   #4
tortoisethunder
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No difference when turning.
I will try it in neutral.
I will try in different gears...
Thanks!!!
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Old 06-29-2017, 10:04 PM   #5
tortoisethunder
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When it starts to vibrate, I take the car out of gear and it stop vibrating? I'm thinking transmission mounts?
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Old 06-30-2017, 11:25 AM   #6
Strider327
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Sounds like mounts. Inspect it and see if it needs replacing. Actually, where is the vibration coming from specifically? It could just be a broken pitch mount aka dog bone. It sits dead center right behind the intercooler.
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Old 06-30-2017, 11:39 AM   #7
Charlie-III
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1998 Legacy 2.5GT
Silver Sleeper BK, 5MT

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Quote:
Originally Posted by tortoisethunder View Post
Brand new tires today...
I have a vibration at about 5 to 7 miles per hour. It feels solid at higher speeds. It's like a thumping from the middle of the car to the passenger rear then it goes away. Mechanic checked it out, wheel bearings? couldn't find anything. It is sometimes worse than other times. Also as I slow down you can feel a slight thumping around the same speed? Tires were worn even. I went under the car today and didn't see anything obvious.

Ideas?
Quote:
Originally Posted by Strider327 View Post
Sounds like mounts. Inspect it and see if it needs replacing. Actually, where is the vibration coming from specifically? It could just be a broken pitch mount aka dog bone. It sits dead center right behind the intercooler.
Middle of the car to passengers rear........in the first post......
Not likely to be a pitch stop.
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