Falha mecânica em um grande Cherokee 98 americano

Good afternoon, I have a great hurry with my Grand Cherokee, the technician in automotive mechanics cannot repair a fault:
I will be as brief:

everything started with a fault where the engine stopped complete We wanted to use and the surprise was that the car turned on the engine but presented a failure as if it were out of time and did not accelerate, the mechanic commented that it was the gasoline pump the Czech and the pressure was 50 psi, the next thing that it was checar, fuel lines, fuel pump, injectors in a laboratory were checked, distributor, position of position of position of the cranks Damaged the crankshaft sensor and the other parts are fine, it changes it and continues to do the same the engine starts normal, but when accelerating it does not run out, also presenting exploions, fire in the air inlet to the engine giving the sensation that it would be out of time for it for it the mechanic comments that it has to check where the sensor of the crankshaft goes and the information is laughed Distribute, Czech the computer proveing ​​it in another vehicle and in a test laboratory and everything works normal, it tests with the distributor, distributor coil, changes the firing position of the crankshaft again and at the end of making a large revision to the entire system of ingenition and the fault continues to be presented again, when the vehicle is scanned Advise myself in this regard, I would like to please East, we have made several Consultas com outros técnicos e a falha não é resolvida, agradeça -me por sua atenção ...

Tcheco ou altere seu sensor TPS.

Hojo The failures are not literal with the diagnostic equipment, a problem of set -up of the same distributor could prevent or wanted that the body of the distributor is with axial game, or that marks in two points the spark instead of only one, the wiring is also an option of fault that the scanner recognizes as a sensor problem can be a cut line that fugged or that can even be IMAN Captor sensor, which, when accelerating the vehicle, produces a lack of Ppopity, mas você comenta contra explosões de fogo pelo escapamento tem mais a ver com parte do ajuste, já que não há outra maneira que isso aconteça, a menos que alguma das válvulas de Permamesca avierta quando não deve ou seu prêmio esteja em condições muito ruins.

Você também deve verificar a polia do eixo de manivela, ela pode ser abatida e não girar com a engrenagem. Quando o motor está ligado, apenas existem exposições ou há algum outro som?

Thank you very much for your help, the crankshaft pulley is checked as comets there is no game, the explosicons only occur when the engine is accelerated and it is only heard as if the engine is out of time there is no strange noise more, the valves were checked and they are well, likewise there is no axial game in the gear of the distributor, but however I will ask with respect to the sensor TPS, I will ask him if Mark only one, with respect to the game of O coletor do ímã A verdade que eu não sei se ela carrega a polia, eu acho, apenas o sensor anterior era preguiçoso e seu ímã foi usado, mudamos e eu melhorei o começo muito consideravelmente, mas as explosões ainda continuam no momento de acelerar, direi a ele que verificando o conjunto de agradecimento, ainda estamos em contato.