I've searched around here and some of the answers are a little different than my situation. My car only vibrates in the mornings (sitting since night) it's not really hard but audible. After it warms up it's gone, no vibrating at red lights or anything. During the day starting and shutting it off it doesn't do it, only in the mornings.

 

Happens to me too, and I assume it's because the engine's really cold due to over night temperatures. Well for me at least since I'm in NJ, idk about Florida

Hopefully someone with more knowledge will answer.

 

I thought of that too, it's been like 75 at night with really high humidity. Thanks for the input though

 

What oil filter do you have on? If you have a shitty filter with paper end-caps that could cause drive-train chatter at startup...

 

I honestly have no clue, I just bought it the 14th so I haven't looked into changing anything yet.

 

Also when I left work today (around 1pm) and started the car is was vibrating a lot, kinda making me think it's a motor mount now. (I know nothing about working on this car so if anyone could please please please help, how do I get to the mounts?)

 

Sub'd, curious about this as well, my car does the same

 

My car sounds funny when started cold. It lasts too long to be oil starvation. I read somewhere that the computer messes up the timing or something on purpose to warm the engine up faster for emissions reasons or something along those lines. I also get physical vibrations also but I'm sure those are just from bad motor mounts since my car is at 82000 miles and they are original.

 

Hmmm, my car has 88k, bought used, so idk the condition of the mounts. :/

 

a helpful mount thread

https://acurazine.com/forums/showthr...d+motor+mounts

 

Mine does it too in the mornings too hardly noticable but its there.

 

The computer missfires to heat the cats faster. Lots of people with open exhaust on here report their car sounds very nasty for the first 30 seconds after a cold-start. Then the engine note goes smooth. Someone made a very interesting video with a wideband O2 gauge, but I can't seem to find it.

 

It is only the cold loop programming and high idle that is causing the engine to run rough. You can run up the engine when hot to 1200 and it certainly isn’t smooth. Been down this road before and realistically, can anyone ever believe that a manufacturer would intentionally cause the engine to misfire especially on a cold start as the raw gas would kill the cats and certainly does absolutely nothing to get them hot any quicker. In fact, throwing cold raw fuel on the converter core would cool it down if anything.
Just the nature of the beast

 

Made the switch to Mobil 1 (synthetic oil) and made a noticeable difference in morning starts and engine idle. Overall the engine seems to run more smoothly. I know you can take your car into Acura for a Synthetic Oil change(they use Mobil 1) and it will run you close to $90. If you even somewhat handy, oil changes on these cars are a cinch and can save you some $$. If you look on Mobil's website it lists one of the benefits of switching to synthetic is better low temp start up protection(aka morning starts).

http://www.mobiloil.com/USA-English/...Motor_Oil.aspx

Just my 2 cents!

 

my car does this too. rough idle on start up, goes away when warm and the car runs great there after.