my Is has developed a weird fault
from cold and when warm (although it never use to when warm,) my car seems to misfire mostly around corners or from standing starts. The car jolts once or twice extremely violently, but then drives perfectly in a straight line for the rest of the journey. then once i get to a roundabout or a bend, it will randomly missfire once then carry on. It is an intermittent fault, and only coccurs like 4 or 5 times a journey; sometimes it doesnt even happen at all
i also know that my hydrocarbons are high even though i have a new airflow metre on there
besides that, iv brand new coolant temperature sensor from bmw too.
there is no air leaks; all vacuum hoses were replaced less than 10000 miles ago, iv cleaned the injectors too. the throttle body has been refurbished for a big bore one and so is in working condition. iv recenlty changed fuel and oil filters, oil, and brand new spark plugs too.
other than a TPS what else could it be? what gets me is its only really round corners excpet the occasional standing start. i mean in the mornings sometimes it wont start but then any other time of the day, from cold or warm it will start! it also stinks of overfueling? Sometimes in the mornings its fine and others it is not; it really is a random fault!
i shall be trying a new cam sensor end of this week but im fast running out of ideas, as its definatly engine related, not driveline. Assuming its not the cam/crank sensors (i dont see how these would cause overfuelling), anyone else got any ideas to what it could be? maybe fuel pump!?
please help! PLEASE!
Topic: Bizarre m42 fault (Read 2821 times)