New to this forum so maybe this has been covered before. Problem started when my 05 diesel fourtwo stopped while driving. It was starting and stopped in a few seconds. It now starts but no power to drive more than a few feet on flat surface. I have changed fuel filter, air filter, oil and filter. Cleaned air intake including EGR and turbo. Replaced fuel pressure sensor and pressure control valve. Cleaned injectors and even the muffler. It runs rough or surges, will idle but, will die when trying to move. Had a P0251 engine light, so have bad fuel mix but at a loss as to what more to do (reset the engine light and it did not come back on). Hope someone can help.
RogerS