Is the air flow bad all the time or only on heat? If bad all the time the evaporator screen is plugged, if only on heat it's the heater core or some flaps that are not moving correctly. I've never seen a dirty heater core, but then again I haven't seen many cars with 190K miles on them either. If you are lucky you can take the blower motor out and reach your hand in there and clean much of the screen that goes over the evaporator. Be sure to vacuum everything out or you'll trade lack of air flow for lack of drain water flow. Unfortunately you can't reach the water drain since it's on the other side of the evaporator. You can't easily reach the heater core at all without taking the whole case out of the car. It may be possible to disassemble the whole dash and remove the heater core box leaving the evaporator case in place, but I've never tried that. (You'd still have to disconnect the water lines.) There are a couple of screws that hold it in place that are close-to-impossible to reach, and if you do get them out you won't get them back in again. Make sure all your flap acuators are working too. While you're in there, make sure that the blower motor is working properly and that the resistor pack has not become corroded. Also - you didn't happen to recently replace the blower motor, did you? There is a very common cross reference motor that turns backwards. Interestingly enough a cage blower turning backwards still moves air in the right direction, just not very much of it. Also part 2 - make sure that the sponge that seals up the heater tubes is still in place. When it falls off a lot of air will leak out the back of the housing. You reach it from the driver side and have to feel your way behind the heater box to where the heater lines exit the box and go out thru the body. Dave S --- In dmcnews@xxxxxxxxxxxxxxx, "ksgrimsr" <knut.s.grimsrud@...> wrote: > > Hi guys, > > I'm getting pretty low airflow through my heater/AC system and suspect > that I have an accumulation of lint on the heater core restricting > airflow (which would be reasonable for my 190K mile car). > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/