my car vibrates when accelerating. Most noticeable at 25-25 mph my cellphone that is attached to the windshield shakes around. Has been going on for a while, now i want to take it to the shop.

I found there are many TSB that seem to describe my problem and there may be a software upgrade. there also seems to be a potential issue requiring differential mount or driveshaft replacement.

Does anyone have experience with this? And did Honda pay for that when out of warranty?

 

Sorry I don't have any experience with your vehicle specifically, but in my experience this is almost always bad inner axle joints on a FWD/AWD vehicle. Other suspects are worn control arm bushings, engine mounts, driveshaft bearings or supports (AWD only), poor alignment, poor tires, or a combination of all of the above....

 

Thanks for the response. Sorry, I never replied. it took me a while to find time to go to the dealer.

They checked out if anything is loose, nothing was. But they updated the firmware and replaced the transmission fluid. The good thing it was free under some extended warranty (mine is already 6 years old). the car is still not perfect, but maybe that is the way it is. Roads are rough here, so things are not as good as new anymore.
At least I'm not able to reproduce the 25-mph vibrating anymore. So whatever it did, it did something good.

 

I own Accord 2014 sport 2.4 cvt. I love my honda, but I have one issue with it. extremely only in D and with depressed break pedal (car is stoped) it has a little uncomfortable vibration. I have changed all 5 mounts, spark plugs, cleaned throttle body and I still have this issue. yesterday I have found that the problem is in low Rpm 580-600 which happens only in D (for example on red light when car is stoped). normal rpm is 650-750 which my car keeps in R , in P in N but in D and in S the rpm goes down from 720 to 580-600 and starts the vibration (it naturally that on this rpm it will be) I thought that when heating is on also there is no vibration but I noticed that during the heating the fan periodically turns on and off, so when it turns on the rpm goes normal 650-750 mostly 720 and there is no vibration but as long as fan is off the rpm goes down to 580-600 and again starts vibration.So rpm goes normal not because of heating is on, it goes normal because the fan is turning on. also would like to admit that when I turn the light on also rpm goes normal and there is zero vibration. Now I know that the problem comes from low rpm when the cvt is in D and S. I also checked the cvt and it works fine.also Also I have measured the volts in P in N and R without turned light and heating is 12.2v -12.3v in D it is 11.9v -12.150v. with turned on lights 14.2v