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Old 03-31-2021, 09:21 PM   #1
seansaturn
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2007 VUE 3.5L
Default Vibration while accelerating (not inner cv)

I am getting a vibration/shudder under load. It's usually always from a stop or from very slow speed.

What I've noticed, it vibrates when:
Driving straight from a stop (under hard acceleration)
Driving from a stop around a RIGHT corner
The vibration is under the drivers floor area
It feels like the wheel is skipping or something.

Doesn't vibrate when:
Driving from a stop around a LEFT corner
Not under load, normal driving

------

- I replaced the CV axle on the front drivers side, problem didn't go away.
- I replaced the motor mounts (airbox, front and rear mounts)
- I rotated wheels and checked lug nuts
- I replaced the CV axle on the front drivers side again, thinking I got a bad one, problem didnt go away
- Drive shaft not installed currently

I was thinking maybe a transmission bearing where the CV axle enters the transmission, or, the 4th mount that connects the transmission to the sub-frame on the far left drivers side.

The mount honestly looked ok visually, but i havent taken it out or anything.

I strapped a GO Pro camera to the inner tie rod, and it looks like the transmission shakes. I'm not sure how much it should shake, I can upload the video if needed.

I wondered what steps I can do to confirm an exact diagnosis on this.

Thanks
...
Saturn Vue 2007 AWD 3.5L V6 - Honda J35S1/GM L66 Engine
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Old 04-20-2021, 10:30 AM   #2
Cavell
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2003 VUE 3.0L
Default Re: Vibration while accelerating (not inner cv)

Where did you buy motor/trans mounts? Online? Dealer?
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Old 04-25-2021, 08:30 AM   #3
seansaturn
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2007 VUE 3.5L
Default Re: Vibration while accelerating (not inner cv)

I pulled them from a salvage yard, 30K mile car, rear ender. OEM

When I changed them, it didnt change anything at all. Vibration was exactly the same. I thought if it were the mounts, then it would change behaviour in some way.
It also wouldn't explain why the vibration isn't apparent when turning left from a stop under load, but right, very much so.

So I have ruled the mounts out at this point, at least the 3 I mentioned in the OP. I checked the 4th mount bracket on the far drivers side, but it looks ok visually and the bolts are not loose in any way
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