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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 14,606
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AC fan only runs on high speed
My 1983-911SC with AC,the fan only works in the high speed setting but not on the lower settings,do I have a faulty resistor pack?I replaced one of these on my sons VW Jetta and it fixed it.If this is the problem,where is it located on the SC?Any advice is appreciated.Thanks
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12-31-2002, 04:40 PM
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Not Quite Banned
Join Date: Dec 1999
Location: Ft. Lauderdale
Posts: 1,222
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On a Carrera the resistors are located behind the passenger kick board, so I would look there first. Also on a Carrera, the 2 lower speeds are controlled by resistors while the high speed is not. It makes sense that your resistors are damaged.
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Thomas Owen 1972 911T 1972 911S |
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01-01-2003, 04:38 AM
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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 14,606
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Thanks for the reply,after looking at other posts regarding AC issues,is the fan in the passenger side under the floor board?I am thinking the resistor pack is in the fan housing?Can the resistors be purchased seperately?What are the resistor values?I am guessing it is cheaper to buy the resistors from a vendor than it is to buy the pack from Porsche?Sorry for all the questions but I am new to 911 AC system and do not fully understand it yet.Thanks
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler . |
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01-01-2003, 04:46 AM
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Registered
Join Date: Dec 2000
Location: McLean, VA
Posts: 1,155
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The fan is part of the evaporator assembly, which is in the 'smuggler's box' - look for a panel in the floor of the trunk aft of the fuel tank, passenger's side.
The resistor pack is mounted on the passenger footwell firewall. Remove the carpet, and you will find a wooden panel. Remove the three screws and remove the panel. The resistor pack will be exposed. First thing you should do is buy a copy of the Bentley manual for your car. It really helps identuly components, troubleshoot systems. etc. Its a valuable resource. Buy it right here at Pelican. Sounds like your resistor pack and/or associated wiring is toast. Best bet to replace the pack is one of the many Porsche dismantlers. Very spendy from the dealership.
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Tony K '89 944T 944 SuperCup Champ 2004 & 2005 '85 Carrera - Sold [sob] TrackVision 944Cup The 999 Site |
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01-01-2003, 07:05 AM
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had the same problem with my 87, the resistor pack on the passinger side was disconnected, just pluged it in and all was fine. The AC still sucks though.
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2009 C2S cabriolet 1987 Targa - sold 2003 BMW X5 - sold |
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01-01-2003, 02:29 PM
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What if my A/C fan quit working altogether? Before I start going through all the usual troubleshooting techniques is there anything that jumps out at anyone? It worked when I bought the car but quit working one day all of a sudden.
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Nate Gone: '86 Carrera coupe Current: a $75 BMW 320i |
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01-03-2003, 11:35 AM
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Registered
Join Date: Dec 2000
Location: McLean, VA
Posts: 1,155
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OK, I'll play......
The fuses have a nasty habit of developing a layer of oxidization on their end caps, which causes them to go open circuit. The fix is simple - find the fuse, remove it, clean the ends with light scotchbrite, replace the fuse [along with some silicone grease to prevent this from happening again]. I've had several fuses quit this way - simply twisting the suspect fuse in its holder can sometimes work if you are stranded.
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Tony K '89 944T 944 SuperCup Champ 2004 & 2005 '85 Carrera - Sold [sob] TrackVision 944Cup The 999 Site |
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01-03-2003, 11:48 AM
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1987 Porsche 911 Carrera Targa 3.2 - sold
1987 Porsche Cararra 3.2
