toyota camry 2003 vibrate when warm-up and AC on
 

My Toyota camry '03 recently produces a vibration that makes me feeling sick. I noticed it happens when the car stops at traffic light and it gets worst when AC on. Under the hood, I can see the engine block vibrates after the car has driven for a while. It has 60,000 miles on it. Oil and filter changes every 5000 miles. Other than that the car drives smoothly and no problem. Does anyone know what has gone wrong? I would like to take it to the mechanics or a Toyota service center but would like to know the root cause first. Can it be fixed by DIY? Thanks very much.

RE: toyota camry 2003 vibrate when warm-up and AC on
 

Sounds like it could be one of these, your idle is too low and rough, or your engine mounts are broken. I dont see why these cant be fixed by you - here's what i would try.

On my 2002 V6 theres a black throttle valve position sensor. It is on the TBI and faces outwards, that is towards the front of car. If you loosen the two phillips screws you can rotate this valve and it will change your idle.
Also try cleaning your TBI butterfly, its probably filthy, they all are after about 30,000. And this could make your idle rough. I have another post on this so i wont repeat it.

And now check your engine mounts (picture of front mount) - first find them and examine them for cracks or evidence of movement. They dont always show when they are broken so try this. Start the engine and park the car no where to hit anything for a long ways. Set the parking brake good and firm. Have someone put it in drive and hold the brakes but good. Now you stand off to the side! and watch the engine while they rev the engine a few times. You are looking for excess engine movement. If it moves a whole lot like several inches maybe you need to change the engine mounts.



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