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Join Date: Mar 2004
Location: Hong Kong
Posts: 105
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AC fan speed 1-3 not work
Hi,
The AC fan doesn't run at Speed 1-3. The fan blow at Speed 4 (Max speed) only. Fuse is ok. My car -- 944S2 1989 EURO Any idea? Thanks~~~ Kay
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Porsche 944S2 (3.0L, NA) 1989 -- rare in Hong Kong |
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11-17-2005, 09:32 AM
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There is a relay that has gone bad, but you will also need to replace the fan motor at the same time. The motor is the reason that the relay went bad.
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(Mae) Red '86 944na- gettting new paint soon. (Abby) Black '86 944na- new addition to the family. |
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11-17-2005, 09:54 AM
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Location: Ontario, Canada
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mine does this sometimes...
try pushing slightly on the AC knob with the position on 1-3... if the fans come on, time to take the switch apart......
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Kyle 2008 Mini Cooper // '83 Porsche 944 // '01 Mazda Protege [sold] // "Never break more than you fix!" - SoCal Driver |
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11-17-2005, 10:34 AM
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Location: Tucson AZ USA
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Isn't there a resistor pack that controls the less than full speed? Check that before you trash the motor. The fact that the fuse is OK tells me the motor probably is as well.
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Bob S. former owner of a 1984 silver 944 |
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11-17-2005, 10:38 AM
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Feelin' Solexy
Join Date: Oct 2003
Location: WA
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I have the exact same problem, be interested to see how this one turns out.
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Grant In the stable: 1938 Buick Special model 41, 1963 Solex 2200, 1973 Vespa Primavera 125, 1974 Vespa Rally 200, 1986 VW Vanagon Syncro Westfalia, 1989 VW Doka Tristar, 2011 Pursuit 315 OS, 2022 Tesla Y Gone but not forgotten: 1973 VW Beetle, 1989 Porsche 944, 2008 R56 Mini Cooper S |
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11-17-2005, 11:02 AM
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Don't replace anything yet--You probably only need to sand the contacts on the resisitor/blower with sandpaper. Raise the hood, and carefullyu lift up the thin black piece of cowl plastic to expose the area, sand lightly should fix it.
I can't remember the exact location, it has been a looong time, this is more of a warning so you don't trash good parts. Try a search of this forum, as this is where I found the procedure that fixed mine. Took about 15 minutes and zero dollars.
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Eric 83 911SC/83 944 bunch of Honda 750s 69 Chevrolet C-20 Longhorn (family heirloom) |
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11-17-2005, 11:11 AM
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Location: Ontario, Canada
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mine did the exact same thing and my problem was in the switch - dont know about u guys though... good luck!
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Kyle 2008 Mini Cooper // '83 Porsche 944 // '01 Mazda Protege [sold] // "Never break more than you fix!" - SoCal Driver |
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11-17-2005, 11:15 AM
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Location: Phoenix, AZ
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above the fan motor under the plastic cover.
it's about four inches long held down by two screws. try soaking in white vinegar and then rinse off.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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11-17-2005, 01:21 PM
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By the way .. when you turn off you AC, always you hit off the AC compresor button also . ?
In my short experience always with Jap cars .. if you shut off the AC fan the compresor come off also .. but it's not occurs in my 944 .. is normal . ?
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David Alonso De La Vega Tapage Panama 944 Turbo |
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11-17-2005, 01:29 PM
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Location: Pottageville Ontario
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Try the *full boost* defroster switch a couple of times-- this disables or bypasses the regular fan switch. Sometimes a spiders web will get in there and screw things up.
Happend to me Jeff
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Jeff Laurence, '87 944S |
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11-17-2005, 07:04 PM
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Hi,
Thanks for all guys~~~ I will try sand the contact back.... then check the switch. Just start from the simple. How to check relay?? Will give you updates tomorrow. Thanks Kay
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Porsche 944S2 (3.0L, NA) 1989 -- rare in Hong Kong |
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11-17-2005, 07:09 PM
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1987 Porsche 951 M44/51
