okie my family LE pinging finally solved. send to service at 1 workshop n the mech finally got the right timing..on that day, the car was fine...runing smooth at 900-1000rpm. that night, it drops to 500-600rpm but when a/c kicks in, its at 900-1000rpm. the next day, it was at 400rpm and when a/c on, it was at 800-900rpm...but engine never die...jus shaking nia. so i decided to play around with the air/fuel mixture ratio screw under the air filter box...turned it around to get 850 rpm likethat and when a/c kicks in it was at 1000-1100rpm. viola, problem solved and car also more responsive and hopefully f/c is not that bad...
ive got a friend who also drives an LE 1.5 and he told me that LE engines when engine too hot, the rpm goes gradually higher too...a thing i dont really experience with my datsun as it will sit at 900 rpm even though i drove from melaka to KL.