05 trailblazer ac

[jason616]

my ac pump kicks on and off no matter what the rpms are at. the ac comes out warm and when i try to charge it the pressure goes up to overcharged and then goes to 0 because it kicks off every 10 seconds.

[maxwedge]

Welcome to AF, you cannot just charge the system without knowing what is in there start with, it should be evacuated, leak tested and properly recharged.

[jason616]

how would i go about evacuating the system myself, do not want to take it into the shop

[jason616]

also my check engine light use to come on and off randomly, now it is on and stays on when i take it in nothing shows and they say i have a blown fuse but after checking all fuses all are good.

[maxwedge]

If the cel light is on there is a code, now the code reader may not work because the cigar liter/courtesy lite fuse operates the power to the scanner. You cannot evac the a/c without the proper equipment and backround.