Posted by richard saddington on June 22, 2007, 11:57 pm, in reply to "Ford Focus 1.6 2001"
recomend you check for fluctuating map sensor output voltage as i found that the ecu injection duration follows this closely and it causes the engine to hunt or surge, ford tecs said map sensor fault is not and issue but ive put one on and cured a hunting problem (dont alway belive them when they say a part does not fail!!!!)