I am also having a problem with my mehran. The issue is that when I release accelerator pedal in any gear at bit speed or I apply sudden breaks, the car is giving some sort of sound (like some thing is taking sudden jerks for one or two seconds). I went to a mechanic and hi advised to change GADRI due to rust (zang) at one side.
Another mechanic said its foundation problem and the whole engine take jerks.
My own observation is that there is some thing on axle, rod or connected to that which is making sound and jerks.
I also went to suzuki and they people made a long list of part to be changed or repaired making an estimate of Rs. 30000/-
Kindly suggest me what should I do.