hi can anyone help me, i was coming home from holiday yesterday just come over the bridge on the motor way only doing 65-70mph, it sounded like the engine back fired then died wouldnt do nothing, i got recovered home i was told could of been cam belt but thats ok all the belts and pulleys were all changed 13000 miles ago all oil and water ok, wen i tried to start the engine its not doing any thing the cam belts not moving, has anyone any ideas wat it could be? will it need a new engine? and how hard is it to put a 2.5 engine in will it need new ecu? or would it be better to strip this engine down and upgrade it any ideas of cost ????