Re: Air flow sensor cleaning. My V6 had an idle speed that 'hunted' from about 500 (i.e. almost stalling) to 1500rpm when started from cold. It took ages to settle down. Removing the air inlet and watching the air flow sensor made it obvious that this was the cluprit. Yesterday I cleaned the air flow sensor (the whole unit, not just the little 'bit' at the front) and the car is transformed. The whole unit was black and sludgy inside (from the breather pipes just up the line, I guess) and I used carburettor cleaner to clean it all up so that it shines. BUT.... (2 buts, actually) firstly, remove the sensor from the trunking before you do this, otherwise all the dislodged dirt gets sucked into the engine and, second, make sure you lubricate the flap mechanism either with 3 in 1 oil or LOTS of WD40 otherwise it won't move smoothly because the carb cleaner removes all lubrication as well as dirt. This whole process takes about 20 minutes (maybe I was quick because it was cold outside!) and is well worth doing for the difference it makes.