hello. i have a camry 95 4cyl. there is no problem with the start and idel in neutral gear, however, when driving to the first traffic light, the car is shaking badly(the gear is in D position), not frequently shaking but once every 2 or 3 seconds (it's like the car is going to stall, rev drop from 1 to 0.5 than back to 1), speed up than fine, another traffic light, shake again. it is fine when put gear in neutral or speed up. also it becomes fine after the temperature reach to normal. can anyone help me with this problem? thanks!