Chevrolet Optra has me crazy

That such a friend
because as you tell them are symptoms that the CPU is not having its function, just to verify if you already sanded and checked the mass terminals of the CPU
to rule out that fault, since it happened to me that they look good apparently but fail.
Let me check the autodata there come the values ​​of the sensors and send them to check the masses directly in the harness of the CPU that the 12 volts arrive
lucky and we continue in contact

acceleration sensor if it has the, if not the ECM

Sure is the poorly located crankshaft pulley

If you already did all the relevant tests, go directly to the car's computer, it is perhaps failing and causing car failures

Friends today I took a great weight from above. Find the solution to the problem !!! And I appreciate your concern and encouragement to help me repair the car, now I told them, the car passed through 3 previous garages and they even changed rings, metals almost adjusted it in the end ... The only thing that I needed to try was the benzine pump and since the manometro was defective That the pond had sand and pebbles and at least 2 kilos of sand, clean the pond and change the pump and finally solve the nightmare