I am trying to find replacement parts for the fan in my Mav. Not the radiator fan, but the fan that blows cold air for the factory a/c. When we turn on the a/c I can hear the compressor kick in. I can also feel a faint breeze of cool air coming out, but there is no real pressure in the air, like the fan is busted. But everytime I search for a fan, I only get returns for the radiator fan. Please enlighten me on what to call this part.
Heater fan. May be a door is not opening. All the doors in an ac system are vacuum operated. Did you look and see if any air was blowing out the defrost ducts? Thats usually where it all goes when the vacuum system fails.
most parts stores call it a blower motor. Usually it either works or dosnt work. If its stuck on low could be the switch also. But if it blows out the defrost duct your vacuum motor is bad. pull out the center ac vent and prop the blend door open with a piece of wood if you cant find a new vacuum motor/actuator.
Like Mavaholic said, if air is coming out at the defrost you've got a vacuum issue. Many times it's the control lever and the notorius brittle plastic retainer that's broken off. I've "permanently" fixed mine by using a fender washer and drilling appropriate holes then sandwiching a small expansion spring in there. I should have taken pics of my fix when I did it but didn't think about it. If that's your problem, some of the forum members probably have one laying around somewhere. Post a wanted thread. If the assembly is the problem the metal part of it probably hung up somewhere in that area of the dash. (It looks like a fender washer with an "ear" on it) You might luck into finding it and coming up with my kind of fix
These Maverick fans don't have a lot of "pressure". These cars are over 30 years old...they won't blow like a new car.
Thanks for the tips. Especially thanks for the diagram, that will help alot. I think the motor is totally dead or the vaccum is a problem. When I say faint breeze, I mean faint. There is no real air being blown. I will check the defrost vent this weekend to see if it is a vaccum issue or the motor. Any recommendations on who has a good price for (or maybe just actually stocks) this part.
If You need the blower motor the part number for the brand Factory Air is 35573. Or a VDO brand part number is PM208.
Check the fan switch and see if any of the wires or the plug looks burnt. The high speed will use a lot of current and over time the switch and or wires can burn out. Also there is a little can(looks like a bean can) under the right side spring tower brace. It is for the heat and air control. If it goes bad,the air will come out slowly and the ducts won't change when you move the selector. It's easy to check. Mark the hose locations,remove them,plug the port on the can that the hose that goes into the car was on,pull a vacuum on the other port and it should hold a vacuum. If you can't obtain a vacuum tester,you can just suck on a hose connected to the port. These cans will rust out on the bottom or crack from flexing. One more thing is leaves and other crap that went through the cowl vent,stopping the air flow. This is a booger to fix. you can get partially some of this out by setting the selector to vent,plugging the two outside registers with a towel or similar item and take the blower end of a shop vac and blow through the center register. It will blow the stuff off of the air intake and into the cowl vent area. You then use the suction end of the vac on the cowl vent and with a plastic knife,or other non sharp object,stir the stuff around and you'll be able to get most of it out.
thanks for all the info. Looks like it is a vaccum issue. I got hot and cold (yes cold not cool) air blowing at a good rate from the defroster. Gotta lot of homework this weekend so looks like next weekend will be spent checking why the it won't switch between the defost and vents. (Yes it is times like this that I wonder why I decided to go back to school) On a good note, our dash cap came in. Fits pretty good as is, but want to cut down a few raised cracks on driver's side of original dash and it will fit perfect. It is amazing the difference it makes. Thanks
My money's on the problem being the a/c vent control slider switch. If so you'll get familiar with the instrument cluster removal procedure. There's good info in the technical area on how to get that thing out.
