how can i repair my vehicle?

Iam Natwar Hakoola, a Zambian. My nissan elgrand of model 1997, engine no QD32-018976A, Chasis no AVE50-001404, Accelerates when its on hidrin and after that

it starts showing the engine check and when i start driving the engine goes off on its own. Sometimes, when its in motion, the engine check comes on and the speed

automatically reduces but still in motion. Please help me by providing me with imformation on where i should touch for the problem to be over, before our bush mechanics

destroy my beautifull car.your assistance of providing imformation will highly be appreciated. waiting to hear from u soon. i have done the service twice but the problem

has continued.