I had 1900RPM shaking and noise problem...
And I had never had that probolem till 2 months ago.
And... I found why it started...

Answer was gas...
I read about gas from this forum and changed mine from 93 to 87...
and today i tried 93 again and that shaking was disapeared...
and i feel like i have more torque than when i used 87...

If you have 1900RPM shaking problem, use higher octane gas...
At least for me, it worked

 

I always use 93 mobil

 

What type of car do u have???

 

always use premium... says so right there on the inside of the little gas door

honda doesnt make any money if u buy more expensive gas so i'm sure its only good for the car to use 93... plus its only couple of bucks more per fill-up so why not?

 

i use 89 for my car and it still gets shaky sometimes.... 93 my car feels slugish then

 

Bastard!!! We don't have 93 up here anymore...unless you go to that 76 in San Mateo!!!

 

which 76 station in San Mateo are you talking about? I go to school out there, so I can easily fill up there.

 

It's on Delaware i think...they have race gas....

 

91! =P

 

what the fock, ur not supposed to use anything less than 91 in the first place. My TL strictly gets 93 and i still hav ethe idle shake.

 

There are people who don't believe what they read in the owner's manual and chalk it up to some sort of conspiracy to make an extra dime. Not saying this is what hyunkun did but this is not a first for this thread. Others have said so. So if you don't mind the loss of power and ill effects on your engine and you can explain away how combustion and octane work, yada yada yada, go ahead. For me, anything less than premium and this car sucks.