This has become more serious now. The engine rattles and jerks badly for 2,3 seconds after shutting the ignition off. Regardless if the fan is running or not, AC is on or off at the time of shutting the ignition off.
Went to the Electrician. He said the coil is fine. What could be the issue?
Also, just now, i could hear ticks and clanking sounds from the engine bay as if some liquid is falling and some metal banging for about 45 seconds with regular intervals of 4,5 seconds after i turned the engine off.