my accord has rough idle when stopped with drive gear and it worsen if Ac. When Ac is on i can see dash, steering and side mirrors shake. Does it sound like Air control valve or is it front engine mount. to test the mount in removed the vacuum line near the intake valve and it had vacuum and no vacumm after 1000 rpm. But little difference in vibration. Should there be huge diference when the line is removed or not. It idles around 700-650 rpm. What do you guys think problem could be?
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ESSENTIAL VAAAPP VAPORIZER

 

There should be a difference in vibration. If there's vacuum but the mount doesn't switch from hard to soft, it sounds like a bad mount. Just to be sure, try sucking vacuum on the mount with a MityVac or something like that.

 

i will try that, i also had really bad rear mount last year it was in two peices when i took it out. could it have caused the problem.
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IPAD GUIDES

 

I had a similar problem a while back, but with a 1993 Accord. I used generic transmission fluid instead of Honda ATF, which my Haynes manual said was OK to do. Well, the Haynes manual was wrong, and after I changed the fluid back to Honda ATF, the shaking went away.

 

I dont even think i got transmission oil replaced till now. It has 153000 km on it
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Concept s

 

You should definitely change your transmission fluid soon, then. It's as easy as changing your oil, except you need a long funnel to put the fluid in.

Remember to only use Honda ATF. But prepare to feel like you've been robbed when you leave the dealer, because it is over $8 per quart.

 

problem is half solved now, after cleaning the throttle body and using usome injector cleaner. major contibuter to the half fix was i loosened the the radiator from body of car and put the packing of foam in there. Now only annoying vibration come after the radiator is turned on not like before that it was annoying all the time.
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Space case grinder

 

I'd suggest to pull off the IACV and clean out the screen with carb cleaner, it will allow more air flow at idle and improve idle quality
Scrubbing out the crud around the throttle plate does help, but it's usually only 1/2 the problem
you can prove it by looking at your before cleaning and after cleaning O2 Sensor readings.

 

i cleaned iacv too with carb cleaner. only thing was i didnt used carb cleaner too much to void damage to electrical components
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Ecigarette forum

 

Get someone you really trust, have them hold the brake and put the car in reverse then loosen and retighten the front mount bolt, that goes to the engine block.
See if there is any change of vibration when it's put back into drive with the brake on.
This is a balancing act between the front subframe and rear subframe mounts.
Back in the 'good old days' the front mount was a dogbone that had about 1/2" of adjustment.