Odd vibration through all floor pedals etc.

[Teamhella]

Hello everyone, I just started noticing a vibration through all the pedals around 2500-3100rpms. The vibration is also noticable in the steering wheel and shifter. It seems to get worse when it gets warmer outside, for example in the morning its cooler and I dont feel it as bad but when I get out of work and its 70 outside I can feel it more. Im thinking a motor mount maybe? Any help would be appreciated. Thanks.

[Ginsu]

You haven't modified anything have you?

I wouldn't think your engine mounts would be the problem. If they were, you would notice it in the mornings too. If you have a buddy with a Scanguage, hook it up and see what codes you get from the engine itself. If not, schedule an appointment with your dealer. Any number of things could be happening (timing, misfiring, etc.) It could just one bad spark plug and the engine is fighting against itself at higher rpms. Who knows? If I were you though I would get it checked out sooner rather than later.

[Ginsu]

Also, big mounting brackets and bolts, etc, don't usually loosen up for no reason. There's probably a more logical explanation. You haven't done anything weird like put amsoil in, have you? How old are your spark plugs?

[Teamhella]

Thanks for the help. The only modification that Ive done would be an Axle back stillen muff. I took that off last night to see if the vibration would go away. Even with the stock muff, the vib was still there. I guess Ill have to make a visit to the dealer.

[williamk10]

When i first installed my CAI, it was touching my battery and at higher RPMs, the entire car would vibrate. After moving the CAI away, the vibrations went away as well.

Off topic, how is the Stillen exhaust? How loud is it at lower and higher RPMs?

[Teamhella]

Since the muffler has been broken in, seems like it has gotten louder. I LOVE the tone of it, even with the HUGE mid muffler still installed. Low RPM's its quiet, high RPM's its nice :-) As for the vibration, we'll see what the dealer says. I dont have a CAI, the plugs have approx 26000 on them. Oil has been Mobile Synthetic for some time now.
Modified by Teamhella at 12:04 PM 5/13/2009

[Moghedian]

Maybe you lost a tire weight, or some lugs came loose? Might be worth looking into before you give the car up to the dealer.

[Ginsu]

A splitting or separating front tire could also feel like engine vibrations, which is also more probable than a serious cam shaft issue or something, especially considering that we're running on Continentals. Not that such a problem is not serious--you could die on the freeway from a separating tire. You should inspect your front wheels very thoroughly, including the inside tire walls.

[86sen89240]

Yo rochester...you've noticed the rpms at which this vibe occurs, but is the rpm and actual speed of the veh constant? I mean are you noticing the vibes when the veh is sittin still or when youre movin? If it happens say you get to 2500rpm and youre doin75 you may want to have the brake rotors checked for true. the muffler is not a big or heavy enough to cause a vibe under your pedals without litteraly hitting some other "metal" under the car. what goes for your brakes go double for a separated tire but only people who have dealt w/tire for awhile can tell if this is the case

[grogman]

A splitting or separating front tire could also feel like engine vibrations, which is also more probable than a serious cam shaft issue or something, especially considering that we're running on Continentals. Not that such a problem is not serious--you could die on the freeway from a separating tire. You should inspect your front wheels very thoroughly, including the inside tire walls.

if it was the engine he would know that by 2 days ago.............it's gotta be the tires or loose lugs.........ginsu has this right........if your engine vibrated that bad you would have had your answer a long time ago............KABOOM!!!

[alonsorules8]

I think you might have lost a wheel weight and after you get above 45 mph it will make the vibration more noticeable.

If you inspect the rims and do not notice any weights missing then the tire separation is plausible.

Did you recently switch back to your conti's after using winter tires? The only reason I ask is that there might be condisation inside the tire throughing off the balance of your wheels.

[Lasversa]

I have to mention that this vibration is evident when I am NOT moving. I can sit in my driveway, push the clutch in and rev the engine up betweem 2800-3100 rpm's and get that vibration. I dont have to be moving. I have to call this very frustrating

[robj80]

You already know the answer if you rev the engine and you get a vibration then it must be your motor mounts. I say give them a visual inspection looking for wear, crack or tear.

[Ginsu]

Unless he's been driving off cliffs, I guarantee you there is nothing wrong with his engine mounts! What is your reasoning here, and how do you explain the lack of vibration in the mornings when its cooler out? Furthermore, the odds of having a faulty mount from the factory and then having it only show up 22,000 clicks later are about the same as the odds of the entire car suddenly splitting in half down the middle. Generally, you have problems with your mounts AFTER you've done a few swaps, not six months after buying a brand new car. The facts of the scenario are these: high revs in high heat = vibration. The engine is obviously fighting against itself, although in what capacity is impossible to tell without a scan tool. It could be electrical, fuel related, or even the cam.

[86sen89240]

True dat... his problems are occuring while sittin still before warm-up. that could be fuel/air mixture ...or even something grounding out on the block. But I think his car is a bit new for stuff like that.

[grogman]

True dat... his problems are occuring while sittin still before warm-up. that could be fuel/air mixture ...or even something grounding out on the block. But I think his car is a bit new for stuff like that.

...............how about the ignition misfiring or partially sparking...........would a partially dead engine give out a vibration?.........man hanging out here sure amplifies why our v can be not so reliable........of course noone lists how reliable it really is so it's hard to calculate...........

[robj80]

Unless he's been driving off cliffs, I guarantee you there is nothing wrong with his engine mounts! What is your reasoning here, and how do you explain the lack of vibration in the mornings when its cooler out? Furthermore, the odds of having a faulty mount from the factory and then having it only show up 22,000 clicks later are about the same as the odds of the entire car suddenly splitting in half down the middle. Generally, you have problems with your mounts AFTER you've done a few swaps, not six months after buying a brand new car. The facts of the scenario are these: high revs in high heat = vibration. The engine is obviously fighting against itself, although in what capacity is impossible to tell without a scan tool. It could be electrical, fuel related, or even the cam.

My reasoning for calling motormounts is because I'm coming from driving an infiniti G20 where motor mount even with such low miles were a serious issue. There were plenty of people who swapped them out under 60k miles. As low as 22k I don't know. I bought my G with 60k on it and the mounts shown cracks and sign of wear. I never swapped my engine or anything like that.

Now as far as a difference in the morning that can very well be the properties of the material used in th emount. It can be softer or harder when cold causing less or more vibration.

Now if he was experiencing a missfire the DTC should be set. Especially if it's enough to vibrate his steering wheel. I am not ruling out missfire becuase they ECU's don't always throw codes but in this case one would hope that it would. Next time it's doing it you can shut the engine down and pull the spark plugs to see if one looks different then the others. Unfortunately due to engine design that is easier said then done.

How does driving a car off a cliff affect motor mounts?

Goodluck finding your answer to this problem. And when you do make sure to post up so future V owners know what they are up against.

[Ginsu]

Dude, checking the spark plugs for signs of trouble was my first suggestion in this thread.

Dukes of Hazzarding = engine falls out the bottom of your car.

[jeffreyfrog]

maybe you have lost a wheel weight and after you reach the above 50 mph it will make vibration more..

Did you switch before your conti's after using winter tires?? One only reason I ask is that there might be condisation inside the tire throughing off the balance of your wheels

[Ginsu]

Update? Been to the dealer yet?