You have to make sure that the compressor has enough oil to function properly. Check compressor clutch wiring electrical connections and compressor clutch and repair or replace as.

How Your Car S Ac Works Autozone
Auto ac compressor wiring diagram. Orifice tube systems or expansion valve systems or a combination of the two which is found in rear air conditioning systems. Checking the wiring on the air conditioning compressor romanautomotive. All our auto ac parts are guaranteed against manufacturer defect for a full year after purchase. Have the system evacuated charged and leak tested by an mvac certified technician utilizing approved recoveryrecycling equipment. This is just to check the wiring on the air conditioning unit to make sure it was working properly. This clutch has a power lead that can also serve to power a throttle solenoid raising the engine idle on older vehicles to compensate for the added drain of the compressor.
In this article we examine how to test troubleshoot and recharge your rvs air conditioning system. San antonio tx 78266 p. Looking at the diagram below as an example this is for a manual ac system from a chevy truck you can see that the black blk wire from the compressor depicted on the left lower portion of the diagram is the ground and runs through a ground distribution cell before grounding to the the frame or engine at g102. In a few car models the power of the air conditioning system flows from the ac switch to the fuse before being transmitted to the clutch oil through the low pressure evaporator temperature. Wiping up spill will press oil into paint and not protect the vehicle an open oil can absorbs moisture. Refrigerant oil can damage the vehicles paint.
Using the wrong type of compressor oil may cause excessive noise and shorten the ac compressors life. Wash off any spilled oil immediately. This unit is composed of three parts the clutch plate the hub and the coil. The ac compressor clutch is an electromagnetic device that engages the air conditioning compressor. Air conditioner system is discharged. The automotive compressor is wired to a cars electrical system through the wiring harness connected primarily by an electric clutch.
Air conditioner compressor clutch not engaging. Automotive air conditioning system diagram automotive. Vintage air 18865 goll st. The schematic diagram as shown in figure 11 has illustrated the operation of the automotive air conditioning system. Servicing your dash air doesnt have to be difficult.