My 2004 2.7 crd jeep pulls fine untill it reaches 3500rpm, then it has a slight jerk, and the engine light comes on. It got sent to jeep and they did a diagnostic on it, and they said no error codes came up, then it went to a jeep specialist who said that the turbo, and injectors need to be replaced, so fine got it replaced. Problem still come up, and they said it is an electrical problem. Sent it to an auto electrician, they changed sensors, and checked wiring, all is fine, but problem is still there. Everyone say it does not bring up any error codes, but if I check the codes on the cluster ( switch on the ignition 3 times) then it brings up P0235 turbo boost sensor and P0243 turbo wastegate solonoid. Any help please?