Hi guys,
Car is 87 sunbird with AFTERMARKET ac. After 21 yrs, I am questioning why the shop rigged my switch (in cab, on dash) this way: turn it ON to 1st position and ac kicks on, all fine, on LOW. Click switch to 2nd position and no change in speed one can hear of blower. Turn it to 3rd position and blasts to HIGH.
Sheesh, it goes from low, to low, to high. Does this sound right? Any way for me to investigate how to make the 2nd position from low to medium? Do I have to yank dashboard out, cuz if so, probably not worth it for now.......
Thanks, Men.
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Edited: Tue October 27, 2009 at 3:12 PM by pippo
With most aftermarket a/c systems they use a different blower than the OEM heater blower. If this is the case you will need to check the color of the wires. Should be a Yellow wire for Low blower, Red wire for Med blower and orange wire for the Hi blower. Make sure that you have power on all three speeds at the switch. You may also need to check and see if you have what they call a blower resister or if the motor is a three speed fan.
The more info you can provide, the better the chances of us helping you out.
Thanks v much, Jack. I will get into that switch panel maybe tomorrow and report back.
Joe
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OK...took the switch apart, and found the following (hope I can explain well without a picture):
Back of switch has tot of 9 wires.
On left (drive) side, vertical, from top to bottom, is Yellow, Orange, Yellow, orange (to 4 copper"pins")
On right (pass) side, again, same sequence as above, white, red/blk, Tan, Red, Blk (tot of FIVE pins).
Hope this provides some clues, Jack (or any other member here). Im gonna try to crawl at the motor, if possible,as some are very well buried.
Thanks!!
Joe
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Check and see if the OEM heater blower has all the speeds. Did you have a chance to check the blower motor for the aftermarket air side? See how many wires are on it.
Get back with us as soon as you find out what you have.
Take a test light to see if you have power at the aftermarket blower motor wires, all three speeds. The brown wire should be the ground. IâÂÂm thinking this may be an old ARA unit buy the way you are describing this system.
You will need to replace the blower motor as it has a short between the med and low speed coils. Is it a Single shaft or a Dual shaft blower?
The blower motor will have one or two blower wheels, but IâÂÂm sure you have a single shaft motor. You will need to make sure though. The motors have three windings in it, the medium is shorted out and could be crossed to the low side windings thus causing you to have a dim light on that lead.
Or maybe its better to spend for just a new motor, and pop it in with rest of the shafts/etc?
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Look at the links I provided in the post above. This is one solid shaft but they call it a dual shaft blower motor because the motor will take two blower wheels. The wheels are removable and will need to be reused unless you break the trying to remove them off the shafts. You will also need to remember how they come off as they are directional. Not all motor are the same so you will need to remove yours and measure it to make sure the replacement is the same size.
Hope this helps and good luck..
Edited: Fri November 06, 2009 at 5:44 PM by JACK ADAMS
Joe,
you may have to split the evaporator case to remove the blower motor in some cases. Hope this helps and good luck.
If you can take some pictures and post them, we may be able to walk you through the replacement.
Edited: Mon November 09, 2009 at 11:52 AM by JACK ADAMS
Wow, time flies. I did get the rad fan problem fixed. Now, with the heat back, time to tackle this (hey Jack, are you still there? LOL)
So, I got the motor/dual cage/housing on the bench. But Mna, I cant split the housing...seems like the stuck spot is around the dang motor, like maybe that rubber vibration jacket that wraps around the motor or something. How do you get it out, guys? Heat it with a hot gun/hair dryer? Last thing Im gonna do is crack that housing.
Thanks, Peoiple!sinew
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Its a rainy day, guys, and inside garage work is all I can do....like opening up that case to remove the bad motor......any tips would be helpful! Thanks in advance
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Aftermarket A/c, cut the glue joints and remove the retaining screws. Just be careful as you go.
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OK, just checked that link to the universal motor, and it appears to match. 3" diameter is 1.5" radius, and circumference =2 Pi r=about 9.5". Only thing, my shaft tip to tip is 97/8" and that one slightly over 10", but I dont believe that is a problem, right TRB?
Give me the OK and its order time on Monday morning!!
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it worked!! Cooool....(no pun). All 3 speeds working! I know, I know, you guys that do this maybe every day, have done maybe 3-400 of these are saying "whats he so excited about". But, Man, I like a challenge, especially if I had not done it before.
Thanks to all here who offered help, and thanks AC Kits!
Pip
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