Old cars. R32 Nissan Skyline are old cars. 25, 27, maybe 30 years old by the time you get around to needing this guide. Parts don't last forever. The cars all used R12 refrigerant, which you know is harder to get than legal cocaine. R12 has been phased out of the US since 1996. It was replaced with R134a, which now seems like it might also be ending life on earth, so something new will probably be the latest greatest refrigerant that doesn't kill everyone in a week.
|R32 GT-R A/C control panel pulled out of the dash.|
The first thing to try, is just cycling the unit. Turn it on, go from heat, to A/C and change the recirc settings. See if this frees anything up. Sometimes the doors stick, and just cycling it will help to make everything work again.
After that, there is a way to put the A/C into diagnostic mode. What you do is hold down the OFF button on the A/C unit while starting the car. Continue to hold the OFF button down, until all the lights on the A/C unit light up. It is now in diagnostic mode. If you let it go early, you have to turn car off, and try again.
For complete troubleshooting, download the R32 service manual, and hit up the HA section.
Does it sound like you have a monster in your dash? Do you have to explain what is going on when cycling though A/C or heater settings?
It is probably this actuator. The gears in the unit get worn out, and they emit a pretty bad sound. This actuators are harder to harder to get these days.
New A/C Compressor for Nissan Skyline GT-R
|Brand new R32 GT-R R12 A/C compressor|
|Condensor, compressor, lines, dryer, and other parts. via FAST|
|Evaporator, located inside car, behind glovebox via FAST|
Conversion of R32 GT-R from R12 to R134a.
This is the cheap and dirty way to do it. A much better and more expensive way is to replace all the hard parts, condenser, compressor, and recharge with R134a.
|Old A/C dryer|
|The old oil in the system needs to be flushed as it is not compatible with R134a oil|
|Old dryer replaced with R12/R134a compatible part|
|R134a high pressure fitting replaced|
|Per a suggestion from Sean Kirby, also clean off/out your evaporator. Great advice to get the most out of the system. Old cars, old systems.|
|R134 A/C manifold for filling, extraction, and testing pressures.|
- All the old refrigerant needs to be removed.
- Then flush the old oil and any contaminants out of the system.
- Replace all the old o-rings with R134a compatible o-rings.
- Vacuum the system, this step really helps with cooling.
- Fill the system with recommended amounts of oil, and R134a
- R134a runs at higher pressure than R12
- R134a will generally not cool as well as R12 on a converted, non OEM, setup
There are some other options, R12 substitute. Traveling to Mexico to get R12 on the black market. Living without A/C. 2 at 65 A/C - cooling. Over time, we will add some of those other options here. Some cars don't have the auto amplifier A/C heater unit, but those are pretty rare.
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