Car has no A/C...changed compressor and no luck!?

Question

I had the A/C compressor changed out and still no luck. Here are the details,it was making a squealing type noise on and off for about 30-45 min before it stopped at the same time so did the A/C. The intitial compressor still had freon in it so I believe both compressors are working fine. So where is the issue??? There is a digital panel that you adjust the A/C with and which direction you want it to flow and there is a wiring issue there because you have to bang it now and then if the screen goes out. (Just in case that means anything) HELP PLEASE!! I am $250 in this with no answers. This is a 99 Dodge Intrepid

Answer 1

If you changed compressor and recharged the system then I think its the wire problem because you should not have to bang anything so take it to a electric mec now or when you want ac back

Answer 2

If the old compressor burned or froze up, you should have change the dryier and the orfix tube/ or expansion valve

Answer 3

He may have jumpered or "bypassed" the low pressure switch to get the compressor to run if the system was low on refrigerant.  The squealing noise may have been just a loose belt.

If you have to "bang" on something to make it work, you may have a loose electrical connector or connection there.