Hello, I am new to pakwheels. I am having a strange problem in my Altis 2012 cruistronic SR which the mechanics do not seem to be able to diagnose. First a few months back my Altis started vibration on low rpms,in D and also in N gears. got it checked and the engine mounting was broken which I replaced and the vibration went away. After that engine was smooth and soundless. Recently I travelled on motorway at the speed of 160 km/hr and as soon as i reached the toll plaza I noticed a vibration like sound Krr krr krr (No vibration felt, just sounded like vibration) on rpm between 1 and 2. lower than 1 rpm and higher than 3 rpm the sound is not audible or is not present i am not sure. But the sound is not present in R or N. Just D, 3, 2 and 1. As I accelerate in D, the sound is audible and its very disturbing. Car performance is fine, pick, acceleration, top speed, fuel consumption everything is OK. Gear oil was recently changed a month ago. Mobile oil changed 2 weeks ago. Got the car checked by a few mechanics, but as the noise is not present in N or P, the mechanics cannot diagnose it. On test drives the mechanics say everything is fine. But as owner of the car I am 100% sure the noise is there and engine is making noise. What could be the reason? @Xulfiqar bhai and all senior pak wheelers, Please. I will be grateful if anyone can diagnose the culprit. Thanks and Allah Hafiz.