miami_em2

iTrader: (7)

I recently changed my alt that gave out on me and ever since the motor shakes erratically. And only when the ac is on. Dont know what to do

greeen01civic4d

iTrader: (7)

check the motor mounts, typical cause

miami_em2

iTrader: (7)

how do i do that?

hypnotic20

Look at the motor mounts and check for cracks in the rubber part.

dj_cronic_metal

also look for tears

Eyger

Oh check it out, I recently replaced a motor mount on my car, I'll show you a pictures in this other thread of what it'll look like if it's broken...(brb)

Eyger

That's weird, I thought I posted more pictures, well there's one:

https://www.civicforums.com/forums/7...tor-mount.html

Eyger

well the thing you're going to want to think about also, is to tell you the truth, if it was your motor mount, then your engine would be shaking the same way before you replaced the alternator. Unless you broke a motor mount after you replaced the alternator.

Sooooo i donno.

miami_em2

iTrader: (7)

I just looked at it and one motor mount is badly torn. It probably did happen after the alt swap

Eyger

Cool cool, well yeah I mean, with all the horsepower you added with the new alternator, what like 70-80 extra horses? Yeah that'll tear the motor mount.

pacotaco

yeah on the 7th that front motor mount right behind the radiator that one breaks alot that what the guys at honda say thats one of the most replaced motor parts you can buy those inserts that stiffen them up it will usaly prevent it from breaking again it might add a little vibration but it will probably be unnoticable. which motor mount is broken left right rear or front?

Eyger

^The motor mounts you can get are called polyurethane motor mount inserts. Energy suspension makes them for our cars

http://www.directtuning.com/store/pc...USPENSION.aspx

The don't add vibration. They actually reduce it. I'm going to be getting some very soon.

pacotaco

they do add a little we have them in my bros car instead of the mounts giving and shaking it transfurs the energy to the frame