now im really stumped on what todo to sort it, so far ive replaced the following
sparkplugs (bosch ones)
air flow sensor
coolant temp sensor
fuel filter
all 4 coil packs
02 sensor
all this and its still playing up, will idle fine when cold but when you drive it its holding back, starts to judder and backfires and pops from exhaust, it only does this when cold and if you leave it to idle and warm up for a few mins, it will then drive perfectly with full power.
whats left for me to change to sort it out?
