Does anyone have any pictures or can explain where the motor mounts are? I need to see if they are still okay due to vibrations at idle on clear days. When its snowing/raining out..it doest do it. How weird is that? Anyway i can tell if they are bad..will they just be cracked?

 

Does it vibrate very bad? My car used to vibrate at idle but it eventually went away.

 

Not bad..but it doesn't go away unless i drive off. Gets worse after 5 seconds of sitting there and goes away once i give it gas. Want to check the motor mounts just to make sure they are okay then going to clean TB

More annoying than anything..feel it in your butt, back, doors, shifter ect

 

Mine doesn't vibrate but it rocks back and forth lol

 

lol really? Mine doesn't do this but does vibrate..gotta be TB or motor mounts IMO

Anyone know where the mounts are and how many are there?

 

Just clean the TB, if you read the TB DIY in tech section you will see many who have complained about the same vibration at idle which they were able to fix with the cleanup. Next should be your motor mounts that i doubt are the cause.

 

I really want to wait for warmer weather to clean TB..don't feel like freezing my *** off outside

Most people that have the rough idle seem to have it fluctuation RPMs back and forth.. mine has only done this once and it was -11 out

Mine only does it when the transmission is in gear in reverse and drive..not in park

 

you ever got an answer for this man? ive got the same exact problem.. happened when i went over a parking curb.. lol.. i was thinking it might be the pulleys..

 

Not yet..waiting until spring to clean TB's

 

now that I think about it... it went away after I changed to my intakes and cleaned my tb.

 

possibly a small vacuum leak. with hood open, a/c off and engine idling, spray a light mist of water on each vacuum hose and listen for any changes to engine idle. if you detect a change, replace or tighten that hose.

my wife's corolla has some vac hoses that you can easily slip off and on even with the clamp in place. they leak when cold. rain or snow may put enough moisture in the air to swell the rubber slightly and eliminate the problem under those certain conditions.

although i will say that every vehicle we currently have, including the G, has some vibration and occasionally "misses" at idle. they all run fine under load. not sure why. i've been suspecting a coil pack or sparkplug on my mom's subaru for years now, but it isn't severe enough to investigate.

could be any number of delicate sensors breaking down slightly and causing the engine management system to correct for something not real (MAF, O2 sensor, TB leakage, engine not up to temp and running rich, slighly clogged injector, spark plug breaking down insulation or electrode, etc.) the vacuum leak is easiest to troubleshoot. second easiest is to spray some electrical parts cleaner on the MAF wire to remove any grease or pollen buildup.

good luck.

 

I am actually having my engine replaced due to piston slap and ticking..wonder if it had to do with that vibration

 

My car was idling rough recently. Couldn't pass the emissions test so I took the car to the dealership to get it fixed along with the 60k service. I had a vacuum leak just as described above. It runs perfect now. They also cleaned the throttle body for $12 per 60k service.

Some of you guys might want to check this out. The service report mentions my intake manifold missing a bolt causing a vacuum leak. Sounds pretty goofy but it fixed it. No more surging when coming to a stop, and feeling the car shifting forward when braking. No more rough idle. I think it's worth it to check if there is some sort of leak.