nickb2, thx for all the comments. In actual fact my car is in good nick. The disconnect of battery is just one of my own thinking strategy to try and get to some idea of what is going on. I actually follow through on all the helping comments and trying to to eliminate possible faults one by one rather than making one big change all at once and never know what was actually causing the problem. Hence keep up the ideas and i am sure this vehicle of mine will be good as new. I will add some photo's just for fun. Thank you all for helping out!