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BM_

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About BM_

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  • From
    USA
  • Present cars
    996.1 C2
  1. Some new developments today. I have not taken the car in yet because I was waiting on an AC pressure gauge set so I could see the pressure levels on the high and low side, and see if the expansion valve is working like it should. I tapped into the system and ran the AC for a bit, and the low side was at a pretty steady 32-33 psi, while the high side was only at about 35 psi. The ambient temperature when I ran the test was about 70 degrees F. This seems incredibly low for the high side, would this be from low refrigerant or a bad expansion valve? Another inte
  2. There you go, glad I was wrong about that one. Still hoping it's nothing in there as I don't want to pull my dash apart to get at it. Have yet to check the refrigerant but will report back with anything new.
  3. From what I've seen it's a pretty general term for the HVAC box under the dash. Apparently almost all the parts contained in it cannot be bought individually, or even viewed in most part diagrams.. and it's a pretty complicated system, so if something goes wrong in there, sourcing a new one, replacement used part, or any single part is nearly impossible. As they say though, start with the easy/simple stuff first and work your way through, and getting my refrigerant checked or flushed is what I probably should've checked first.
  4. Thanks for the reply Joe. I'll have to check on the radiator fan switching, I'll take it out for a drive this afternoon and play around with that a bit. When I was flipping switches yesterday I could hear the radiator fans running when the AC compressor was on, that may have been it. I also think it might be time to have some professional eyes check this out as I am out of ideas. Driving in 90+ and humid weather with only windows down gets old fast. If I do, I will post here with what they find. Hoping it's not something with the dreaded 'black box'.
  5. Thanks for the reply, I edited my car info into the first post. When I say the clutch clicks on, as soon as I turn the AC on from the climate controls, the clutch engages on the compressor and spins as it should. From what I've heard, this will only happen if the relay is working correctly and if the system detects an adequate amount of refrigerant, which is why I assumed that I have enough. I do not have the equipment to check how much refrigerant is in the system, so unfortunately I can't answer confidently how much is present or the pressure in the system.
  6. Car info: US 1999 911 Carrera 2 coupe, 6mt Hello all, I bought a '99 c2 last summer that unfortunately does not have working air conditioning. This summer, after all the hot miserable drives, I've decided to put some time into trying to fix and troubleshoot the system. I've been going through all the common issues and scouring various internet threads and am at the end of my expertise, and wondering if anyone has any ideas (or good independent shop recommendations!) of what else I should check. As of now, when I engage the ac system, the compressor clicks on just fine.
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