I have owned many Hondas and 1 Subaru. The TL manifest an annoying vibration while in drive and expecially during idle which my other cars hadn't. It is "rough" for a $35 K car. The dealer had recently ,i.e. 3 months ago, replaced a valve which relieves excessive gasoline vapor pressure after the check engine light had come on. What's going on? BTW, The vibration /roughness is felt in the gas pedal not in the steering/steering column.

 

yeah mine is to i brought it tp the dealer and they reprogramed it... still does it every once in awhile.

 

How or what did they reprogram? Coincidentaly, I noticed this problem after I switched out the EL42s' for the 512s'. Probably not related but i thought I would throw it out there.

BTW, could bad gas be causing the problem? the winter reformulation? I fill it up with premium Shell at a busy station.

 

I have the same problem, but mine is most noticeable in the steering wheel/steering column area. The dealer reprogrammed the ECU but it did NOTHING. The factory rep came out and took some information back, but unless there are more cases of this around the nation, they won't do anything about it. I suspect it has to do with the engine mounts.

Please take it to your dealer, report it, and have them feed it up the foodchain so Acura's engineers can work something out for it.