Shaking?

[koston33]

Two question for you guys. Mods: mm, cai, rp, dp, ap.

1. When I hit around 70+ the steering wheel shakes like crazy. I feel like it may be the road, but then again it does it on really smooth roads to. What you guys think.

2. So I have su mm for about 20K, and I can really feel the engine more when i left off the gas and when I just tap the throttle. When i let off the gas it feels like the engine is shifting to the front of the car, and when i press the gas I can really feel the engine kick back to the the back of the engine bay. Normal?

 

[nate0123]

Sounds like you may have two problems. The vibration at 70+ could be an unbalanced tire (may have thrown a weight) and the engine shifting usually means a bad motor mount. Did you replace just one MM? Can you inspect the others for signs of failure?

 

[MikeHTally]

+1 on the thrown weight. Could also be mud or other foreign substance on the inside of a wheel.

 

[BillTheCat]

+1 on the thrown weight. Could also be mud or other foreign substance on the inside of a wheel.

This.

As for the engine shifting positions, there will be a certain amount of movement. Especially under heavy load. The question is whether the movement you are feeling is something that's always been there & you're just now noticing (maybe due to the shaking steering wheel causing your spidey sense to twitch) or is something new & different, in which case you may want to inspect those motor mounts.

 

[nate0123]

+1 on the thrown weight. Could also be mud or other foreign substance on the inside of a wheel.

This is probably common sense, but I thought I'd add that if you're feeling it in the steering wheel, it's one of the front wheels/tires that is out of balance.

 

[koston33]

Thanks guys, ya the tire being unbalanced sounds very possible. As far as the mm go, I don't know what I should be looking for as signs of damage, plus I don't have access to a lift, but when I get my oil change next time I'll ask them to take a quick look. Thanks

 

[Kain]

Do you have stock or aftermarket wheels? In addition to the above, if an aftermarket wheel that has a larger center bore than the hub it's going on isn't centered upon mounting, it will shake at highway speeds.

 

[jtspells]

Thanks guys, ya the tire being unbalanced sounds very possible. As far as the mm go, I don't know what I should be looking for as signs of damage, plus I don't have access to a lift, but when I get my oil change next time I'll ask them to take a quick look. Thanks

If the MM did go bad you would be able to shake the top of the motor and see alot of play (north/south for MM) but before anything check the wheel weights, other than that you might have hit something that bumped it out of alignment but i say start small and go from there.

 

[koston33]

Ya I probably should have said that I hit something, and cracked my back passenger wheel bearing. It has since been replace. The wheel has a nice chunk out of hit. Possibly a dented rim is causing the shaking?

 

[nate0123]

Yes that could be it...