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Heating and Ventilation

Having problems with my AC. Works great for a little while then slowly starts warming up closer to ambient.

My ​AC has been lsess than optimal for quite a while. The system has been recharged but it still does not work reliably.  As an example, with an ambient temp of ~85 degrees, turning the air on will bring temp from the vent down to about 40 degrees.  Very nice.  After a while of driving in sunlight the vent air  temp starts creeping up sometimes as high as 70 degrees.  If you park the car for a while then try the AC again the process repeaats.  It can't seem to hold that low temp very long.  Thoughts?




ccu Removal

Model: RS America, Year:1993, Mileage:63K, Type of use:Street use only
I have a 1993 RS America w/o AC and have determined that the CCU needs to be repaired due to draining the battery (55 mA drain). I have the removal wires but cannot get the unit out. It has been out before so it's not being held by a harness, etc. What is the technique?Thanks,

CCU Fan replacement

Model: c2, Year:1990, Mileage:101100, Type of use:Both Street & Track
CCU fan making noise. Any suggestions on extending life of current fan before needing to replace fan. Was emailed a quote from porsche dealer today. $310 for part. I did just replace a failed rear blower motor last week.

fresh air fan

Model: carrera, Year:1987, Mileage:114000, Type of use:Street use only
The fresh air fan does not work BUT when putting 12V directly to the fan it DOES work ok.Fuse and relay are okTried to check switch in middle console but could not get at itFunnily the same problem exists with the AC blower which after all has a separate switch in the console.I can't believe both switches are bad....strange! Prior owner was of no help.Any ideas?

Heater Control unit

Model: 911 RS America, Year:1993, Mileage:61K, Type of use:Both Street & Track
Car does not have A/C. The heater control unit is apparently causing the blower fan in the engine compartment to run unexepctedly and when the engine is cold. It turned on during the night and ran the battery down. I have heard stories of poor repairs by some companies and was quoted $675 to repair by one. Since I live in FL and the car does not have AC, is there a way to wire aroung the control unit? I don't need heat either.Thanks,

Remove rear A/C Condenser

Model: 911 Carrera, Year:1985, Mileage:133000, Type of use:Street use only
I want to add an original version of a rear spoiler to my car. What steps do I need to take to remove (and replace) the rear A/C Condenser?

Complete AC replacement

Model: Targa, Year:1989, Mileage:90000, Type of use:Street use only
I'm looking at buying an '89 Targa with 90K miles on it, pending inspection. The owner removed the entire A/C unit, including all of the tubes and hoses. I'd like to get it back working again, but am not in a rush to do so. How expensive will that change be if I want to do it today? Is it significantly less if I look for used parts over time?

AutoHeat Troubleshooting

Model: 911 Targa, Year:1984, Mileage:110000, Type of use:Street use only
Hello:1984 Carrera. No heat. I checked to see that the rod was attached in the controller(between seats), and it is. What would be my next step in diagnosing the issue? I also checked the fuses, and they seem fine.Thanks so much.Chris MahalickWayne, PA

Heat Control

Model: 964 Targa, Year:1992, Mileage:94K, Type of use:Street use only
Current adventure is that the heat cannot be turned off - knowing that there are multiple electrical and mechanical components involved, and that i have limited skills in these areas, is this better left to a pro or are there some fairly easy to check indicators I can look at first?Many Thanks -

Sanden SD507 vs Sanden SD7H13

Model: 911, Year:1988, Mileage:101000, Type of use:Street use only


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