need some A/C help

[Lextech]

You have to excuse me----I can't remember everybody's different setups. You installed the 3 wire pressure sensor at the compressor??? If so, your tune needs to be changed to A/C Type2. I wouldn't add anything electrical. Just fix the tune.

Jeff

[Chevydillan]

No Jeff. I didn't install anything different, there is a sensor in the pressure line coming out of my compressor that turns on the fans. Where in hp-tuners do change the a/c type?

[Lextech]

If you have the stock 2 wire switch and not the 3 wire sensor then the A/C Type needs to be 3. I don't own HPTuners.

Jeff

[Chevydillan]

Ok. I'll see what I can find. Thanks

[crzy8mnky]

If you have the stock 2 wire switch and not the 3 wire sensor then the A/C Type needs to be 3. I don't own HPTuners.

Jeff

Do you know what needs to be changed in EFI Live?

[Lextech]

EFIlive doesn't have that parameter.

Jeff

[Chevydillan]

HP-Tuners just came out with an update to change the a/c type. I tried all the different types but none would turn on the relay. Maybe it needs the 3 wire switch? Any links on how to wire up a 3 wire switch?
I wish I had my old 411 PCM back. It worked perfect.

[crzy8mnky]

Here is the thread that I used to install my 3 wire.

http://www.ppediesel.com/forum/viewt...64b17e71515b2a