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Location: N. California
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AC not working
Yesterday I drove the car and the AC wasn't working - no drop in air temp at all. Prior to yesterday the system worked perfectly with really cold air (new compressor 2 years ago)
The lamp in the AC switch was on, and I could hear a change in the engine note when you pressed/released the switch. Any ideas anyone? Thanks, Mark
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1991 944 S2 (no more, sold it, gone to a good home) 2003 Infiniti G35 Coupe, 280hp, Black |
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07-28-2003, 08:27 AM
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Is your temp mixing system working? When you turn the temp knob does the air get hotter, then colder as it approaches outside temp?
If not your mixing flap clip may be broken.
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2021 Model Y 2005 Cayenne Turbo 2012 Panamera 4S 1980 911 SC 1999 996 Cab |
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07-28-2003, 08:44 AM
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Hmmm not sure, I'll try it tonight. Is it easy to fix?
Mark
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1991 944 S2 (no more, sold it, gone to a good home) 2003 Infiniti G35 Coupe, 280hp, Black |
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07-28-2003, 09:48 AM
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10 min labor and about $3 for the parts. The clip is located just above and to the side of the gas pedal, behind a black plastic cover.
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2021 Model Y 2005 Cayenne Turbo 2012 Panamera 4S 1980 911 SC 1999 996 Cab |
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07-28-2003, 09:58 AM
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what a coincidence. today i found out that my AC might actually work.
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Current Stable: Black 07 Porsche 987 Cayman S: Long-Tube Headers; FabSpeed Exhaust; VividRacing ECU Tune; IPD Plenum; 997GT3 Throttle Body. Blue 1983 Porsche 928S. 1985.5 Porsche 944 Rat Rod. 2011 Acura MDX. 2008 Mazda 3. Gone But Not Forgotten:Garnet Red 86 Porsche 951("The Purple Pig"). Alpine White 83 Porsche 944 ("Alpine Wolf"). Guards Red 84 Porsche 944. |
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07-28-2003, 10:24 AM
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Location: Gilbert, AZ, USA
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10 min labor? Isn't that a little generous?
Sam |
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07-28-2003, 11:57 PM
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OK so I tried the temperature control yesterday and it is working fine. Hot air when set hot and coolish air when set to cold. But no change when the AC button is pressed.
Any more ideas anyone? Thanks! Mark
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1991 944 S2 (no more, sold it, gone to a good home) 2003 Infiniti G35 Coupe, 280hp, Black |
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08-02-2003, 07:43 AM
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Also the radiator cooling fans are coming on - but no change in engine note when I pull the "AC Compressor" relay.
So it looks like either relay or the A/C electromagnetic clutch Mark
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1991 944 S2 (no more, sold it, gone to a good home) 2003 Infiniti G35 Coupe, 280hp, Black |
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08-02-2003, 01:18 PM
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Or your system is empty, jump the terminals on the pressure switch next to the dryer, see if that gets the compressor going.
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2021 Model Y 2005 Cayenne Turbo 2012 Panamera 4S 1980 911 SC 1999 996 Cab |
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08-02-2003, 07:27 PM
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Thanks I'll try that - but one day the system was working great, the next day nothing - it doesn't fit with a slow leak - maybe a sudden one.
I've got the compressor relay pulled to test it - will test it on monday. Mark
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1991 944 S2 (no more, sold it, gone to a good home) 2003 Infiniti G35 Coupe, 280hp, Black |
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08-02-2003, 08:46 PM
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When the compressor front seal went on mine it lost all of the pressure in a matter of moments.
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2021 Model Y 2005 Cayenne Turbo 2012 Panamera 4S 1980 911 SC 1999 996 Cab |
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08-03-2003, 08:31 AM
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yes, i saw the warp in the ozone layer that day.
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chance favors the prepared mind 1987 944 n/a 5spd. who remembers dial phones?. 'STOP FIXING THINGS ONE STEP BEFORE YOU BREAK SOMETHING ELSE" |
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08-04-2003, 03:26 AM
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Hoping its not the compressor, it had a new one from porsche 2 years ago at huge expense!
I suspect the relay or clutch. Mark
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1991 944 S2 (no more, sold it, gone to a good home) 2003 Infiniti G35 Coupe, 280hp, Black |
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08-04-2003, 07:47 AM
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Location: Lewiston,ID
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Mine is doing the same thing and I can't figure it out. I just replaced the leaky hose, changed to R-134 (I think thats it), and it was working fine. THen yesterday it was blazing outside...and it won't work, and you can hear a relay clicking. I checked the relay and even tried to jump the relay today. CHeck connections at the compressor, and still nothing. I'm burnin up...
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Yes the motor is in the front.... |
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08-06-2003, 12:05 PM
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1985.5 Porsche 944 2.5L Supercharged 
911 SC
Panamera
2007 Porsche Cayman S
The Viridian Falcon
SOLD! -- The Purple Pig
SOLD! -- Mighty Mouse
SOLD!! -- Alpine Wolf
1987 Porsche 944 2.5
