Hi guys new here. I just bought a 2008 civic ex auto with 89k. I have no previous maintenance records. I have done the following to the car so far, I flush the transmission and bought 4 new tires. Here's my problem. The car vibrates as soon as you start it up. you can feel it in the gas pedal and it really sounds like if you have one window down just a crack and you hear that low frequency vibration sound..you know the sound that hurts Your ears.. it happens from 2 miles an hour to 65 miles an hour never stops never changes . I cannot pinpoint the location of the vibration it's not coming from the engine it just fills up the cabin. I can reduce it by 95 percent by putting it in neutral when its in park the vibration is reduced by 50%. I have tried to research the problem and read it could be any number of things an axle, harmonic balancer, CV joints, ball joints, motor mounts, tire rods.. now I've checked the motor mounts myself by trying to move the engine and putting it in gear having someone look at engine and they seem fine to me there is no movement. I tried to be as specific as possible. If someone can point me in the right direction as to what to pursue Id appreciate it .

 

Exhaust leak near the firewall?

 

Thanks for the suggestion I will check into that. I was just told it has to be drive train bc it stops while in neutral??

 

Didn't read entire post but possibly the passenger side engine mount, pos always fail over time. They will look okay but are intact collapsed.

 

I thought about the dogbone engine mount. Isn't that an Si only mount?

Interested as to what this problem is. My FA5 is running up towards the 90K Km mark and I want to know if there is trouble ahead.

 

Non si's have the dog bone as well, think its plastic though.

 

Good to know, thank you

 

Np mang!