I put new compressor, new drier,new seal and freon When I turn the air conditioner on, the idle is too low, If somebody know how I can fix this problem? Do I need put a A/C idle boost valve(1992 civic Lx )Thanks

 

My Civic has always done this and it is normal for the idle to drop a little with the AC on due to the extra load it puts on the engine. I have a Ls Vtec with D series AC. You could check to make sure your IACV is working properly as with will effect the idle with the AC since it controls the idle under all conditions.