A/C fan only works on high, no cold air

[Waltzy]

My 92 NSX is having A/C issues. Fan only works on high and its not blowing cold air. Car has been in the shop for 4 weeks and they cant figure it out...not sure if its a CCU problem or something else. Frion has already been changed. From what I have been told, if they hold the "a/c door" open, then it blows cold air.

Any suggestions would be much appreciated....i just want my NSX back.

 

[JD Cross]

Suggest taking the board out of the CCU and send it to briank for repairs.
This is a common problem.

 

[mick 1]

BRIAN K is HIGHLY RECOMENDED!!!!

 

[drtruong]

When was the last time did you put in freon? You might just need freon. Get a can of freon that has pressure gauze from Pepboys and test the pressure level, if needed, charge it in.

 

[boca rat]

Might be two issues. Only blowing high is a common issue, both of my cars had it, BrianK fixed them both. I also had no AC blowing once the compressor etc had been fixed on one car, turns out the AEM wasn't configured right as hot wiring the compressor fixed it (as a test). So what I am saying is, maybe the AC head unit also needs that fixing as mentioned above.

 

[Waltzy]

When was the last time did you put in freon? You might just need freon. Get a can of freon that has pressure gauze from Pepboys and test the pressure level, if needed, charge it in.

Fresh freon was put in about a month and a half ago so I don't think that is the problem. Looks like I'll be sending Brian K an email shortly.

 

[Rope]

Check the relay for the a/c.

 

[boca rat]

There's also a full test sequence for the AC that you can run. On the wiki I think.