This is about a 1999 Honda CR-V. When it gets into the 3rd gear, if I cruise at about 40-45 mph (cruising meaning I don’t accelerate, just press the gas pedal as is. If I accelerate, vibration doesn’t happen), the whole car occasionally will vibrate. It doesn’t happen all the time. The vibration doesn’t happen in any other gears so cruising in the 4th gear has no problem. When it vibrates, I can let go of the gas pedal, it immediate stops vibration. Then I can press the petal again until it vibrates again at a later time. It has been like this for a couple of years. Is this a transmission problem? I brought the car to a shop and was told the transmission needs repair and they don’t do that. I didn’t go to another shop because the car is old and every diagnostic costs money. I am hoping someone here can tell me what the problem could be and have a sense whether it still worth it to repair.