hi
do you know what the plastic pipe (about 1" 3/4 that comes out from the r/h side of the heater, near the clutch pedal (r/h drive car) and goes round the back of the heater unit, it is joined with a sort of funnel arrangement. it looks like an air pipe.
i had noticed this had come apart when i bought the car, so i put it back, but i am still getting a draught from the back of the heater.when the fan is on hot temp
ps: might be able to take a picture of it, if i stand on my head.
colin
1997 volvo 850 with air con/climate.