Re: need help with A/C problem.. compressor not engaging
First of all I would check to see if the system has pressure, then go from there. No pressure means leak in system, pressure means something else most likely electrical of some sort. There are a lot of sensors now days on a/c systems for example if your outside temp is reading minus 40 degrees or your coolant temp sensor is off ( not reading correctly ) this can send signals to the ecm and not allow the a/c clutch to engage ( ecm thinks it to cold to have a/c on ) so checking the pressure is first, and as the fan speed goes, I think you are going to need a new fan controll module ( blower risitor )