A/C Inoperable after transmission installed

[xxmattfxx]

I'm not sure how they could be related unless there is a ground or connections came loose. But I do recall a slight groaning noise that varied with the rpms that was only apparent with the A/C on, before the transmission was replaced. I do not know if this is simply a coincidence. I tested the connection at the compressor, one pin shows ground and there other shows nothing, with the a/c turned on inside the car. The relay does not de-energize either with the a/c on when I pull the compressor fuse. Any ideas?

[Sabrewings]

Is the intake air sensor plugged in? Not plugging it in will prevent the AC from engaging.

[xxmattfxx]

yes, it's in checked it yesturday

[xxmattfxx]

anyone else have any input?

[GTPJOE90]

go on alldata or shopkey and look at the shcmatics 'im in school and those site are life saveers!" good luck amigo

[02BlueGT]

If the engine was removed when they did the trans, they may have discharged the A/C, If there is no pressure in the system, the A/C clutch will not engage.... you might not have any refrigerant(R134a)

**Make sure the A/C pressure sensor is plugged in, I don't know exactly where it is located though

[xxmattfxx]

I was scanning the car for a different problem I noticed it was throught a p0530 code. I know I disconected a lot of grounds at the transmission but don't see any loose or anything. So it looks like more of an electrical problem, than a mechanical one.