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Car Forum / Porsche / Porshe 944 / August 20041987 944S Air Conditioning
Hello folks, I just picked up a 1987 944S. It's in pretty good shape and I have all the records for the last 6 years. Are the 944S's know to have really crappy air conditioning? It was rather warm today in the low 90's and humid and I switched on the air... Basically there was no point I just cooked in the car. Looking over the records the previous owner installed a new compressor about 3 years ago. Should I bring it in to be checked or is it a known fact that the air just isn't up to speed with these cars? TIA -Jay > Hello folks, > [quoted text clipped - 7 lines] > it in to be checked or is it a known fact that the air just isn't up to > speed with these cars? WHen its working it works really well. Have the system checked to make sure you have freon. If it is only blowing hot air then you may have the infamous plastic vent clip failure. The flapper valve that controls the vent that directs the airflow is connected to the control rod witha plastic clip that has a tendancy to fail in these older cars. Jerry Slaughter 87 944 na/auto I can feel 'cool' air coming out of it. and the less hot it is outside, obviously the cooler the air coming out of the system is. Isn't freon illegal or something now? > > Hello folks, > > [quoted text clipped - 19 lines] > Jerry Slaughter > 87 944 na/auto > I can feel 'cool' air coming out of it. and the less hot it is outside, > obviously the cooler the air coming out of the system is. Isn't freon > illegal or something now? No, just very, very expensive. They are no longer producing it, but you can still get your R12 system recharged. Expect to pay around $50 per pound. You can convert your system to 134. There are a number of conversion kits available. It will run a couple of hundred dollars maybe initially, but refills will be cheap. Jerry Slaughter 87 944 Na/auto I bought the conversion kit from Walmart for under $50 two years ago. My AC has been working with no problems. Andy 87 944 > > I can feel 'cool' air coming out of it. and the less hot it is outside, > > obviously the cooler the air coming out of the system is. Isn't freon [quoted text clipped - 8 lines] > Jerry Slaughter > 87 944 Na/auto > Hello folks, > [quoted text clipped - 7 lines] > it in to be checked or is it a known fact that the air just isn't up to > speed with these cars? One of the original reviews I recall was that the A/C was inadequate, especially given the large rear glass area. On hot, sunny, humid days, I've found this to be true. I've owned my 87 924S since July of `86 and amazingly, the AC still works just the same as day one. But certainly, any A/C is prone to losing freon through joint leaks and failing compressor seals. You may need a charge. I am grateful re the post about the "infamous" flapper valve failure. have a reflective film applied to the hatch, that helps a LOT. side windows not important. and if the air from the vents isn't pretty darned cold, something is wrong > > Hello folks, > > [quoted text clipped - 17 lines] > > I am grateful re the post about the "infamous" flapper valve failure. > > Hello folks, > > [quoted text clipped - 17 lines] > > I am grateful re the post about the "infamous" flapper valve failure. The 944S has the later and better HVAC of the post 85.5 cars. The move a lot more air and the AC works well. Morgan, I own a 86 944 turbo and was driving it today. I installed a new compressor 2 years ago and recharger it with R-12 and it cools pretty good on a hot day, it is comfortable. If your car was switched to R-134 when the compressor was changed and nothing else was changed that might be the problem. I thing that Porsche uses a pressure compressor cycling switch, it switches the compressor clutch on and off. Problem is that R-12 and R-134 are of different density and the compressor is not on long enough. The good news is there are replacement switch to work with R-134 check the internet. Did this on my dad's Honda after it was charged over, the different was about 15 degress cooler at the vent. Hope I helped PorscheBob I just got done converting my AC on my 951 from R12 to R134a. New compressor, condenser, a few ac hoses, and of course the receiver drier. The pressure switch should not be cycling the compressor as our cars have an expansion valve system. The switch is there to shut off the compressor if the pressure is too low, and the new replacement switches will turn off the pressure when it gets to high, which is required in the US for a 134a conversion. The expansion valve should throttle up and down to control the flow of refrigerant to the evaporator. > Morgan, > I own a 86 944 turbo and was driving it today. I installed a new compressor [quoted text clipped - 8 lines] > Hope I helped > PorscheBob |
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