It can be the problem of the ECU, they are unlikely but the best way to try it is, if you have the post -devility, get an ECU with a friend or acquaintance that has the same, but saves I had an altuous similar problem but with the firing sensor of the crankshaft, change sensor and nothing directly and nothing, try with another ECU and nothing, and all the problem came to light, when the owner of the vehicle told me that the problem would come to me. Of changes for a clutch, check the box and the motor earth I did not have a good contact, I clean the earth and the problem was solved, I cost me a lot of time to arrive this result so you do not take this data to the lijera, test and letharms.