Ive searched and noticed similar qualities in peoples cars on the forum, but it seems to be a lot of different things...i was driving today and went to go pass a slow ass car, so I gunned it and while it was accelerating the front end felt like it was vibrating...i got to my destination after that and the car felt kind of normal but something was a little "off." About 2 hours later, I start the car and the rpm needle barely moves and sits way below where it should and the car is vibrating slightly. As Im driving, it seemed ok, but when i backed into the driveway, i opened the door and i heard a little extra bit of noise from under the car when i gassed it...the car usually does not vibrate at idle and runs smoothly at 115k...id absolutely hate to pass this car on, any help would be greatly appreciated!

 

No CEL when this is occurring?

 

try to recreate the vibration; check motor mounts for play; vacumn hoses for cracks; misfire codes?

 

no CEL light on...I drove a good distance today and it was fine, which was wierd but on one occurence, the RPM was a little low, but not to the point it was yesterday...just needed a little rev before i took off. I mean the car still drives great and gets 22mpg, ill have to check all of that stuff out...could it be possible that I need to change my oxygen sensors at this mileage? Thanks for your help

 

O2 sensors could be bad; so bad that they cause such "vibration" while accelerating? mehh... not so likely. again check;hoses;air filter; any misfire codes(or unsteady motor); motor mounts;etc

 

that makes sense...thanks for the help, ill look at all that!