hi ive got a problem with my 307 1.6 hdi .it starts but wont rev up when cold .ive change the pedal a few months ago but this problem is different ,the triangle is on the dash, and the display flashes[ ecu fault .]most the time the car will clear after this problem but now it takes longer before it does .there was only one fault code[ glow plug fault ] .any advise would help ,thanks ray .